R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 2 resistor, given that R, 22 3 Page ID NUMBER I 8 A Fig 4 I 14) Calculate the current in the 2 resistor, given R, 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 ID NUMBER 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) 1, 27) Find the current in the third loop I (use mesh analysis method) I 4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER Section B Attempt all questions in this section in the answer booklet provided Question 1 10 marks a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 Page O 66 I 2 57 4G 3G Exams docx 8 Page ID NUMBER Question 2 20 marks a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3 Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user Give three advantages and disadvantages of both systems GOOD LUCK 9 Page 4G ll A O O 67I 2 56 Exams docx 6 Page ID NUMBER A d R 1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R 62, R 32 R, R, R 29) Transform Fig 11b to Fig 11la given R 32, R 32, R 3N R R2 R, 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12 50 10 0 12 Q 4 V 15 0 6 V Figure 12 Vu 7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER 30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR 22) A 230 V lamp is rated to pass a current of 0 26 A Calculate its power outpu P 23) A current of 3 A flows through a 102 resistor Find the power developed by resistor P 5 Page ID NUMBER 4G ll A O O 67 2 55 Exams docx R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R2 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 Q resistor, given that R, 20 3 Page ID NUMBER 8 A 12 R2 Fig 4 I 14) Calculate the current in the 20 resistor, given R, 42 in fig 4 3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 4G ll A O O 67I 2 56 Exams docx ID NUMBER 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) I 27) Find the current in the third loop I (use mesh analysis method) I 6 Page ID NUMBER 4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig 5 For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is 4 Page ID NUMBER 1, R1 30 2 60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I O 67 2 55 Exams docx 7 Consider these two scenarios and comment on the reason for the observations Scenario 1 A bird standing on a bare energized high tension is not electrocuted Scenario 2 A human being touching a bare live wire without any protection is electrocuted 2 Page ID NUMBER 3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R, Figure 3 12) Find the total resistance of the circuit in figure 3 given R 8, R 3, R, 5, R 8 a R R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 2 resistor, given that R, 22 3 Page ID NUMBER I 8 A Fig 4 I 14) Calculate the current in the 2 resistor, given R, 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 ID NUMBER 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) 1, 27) Find the current in the third loop I (use mesh analysis method) I 4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER Section B Attempt all questions in this section in the answer booklet provided Question 1 10 marks a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 Page O 66 I 2 57 4G 3G Exams docx 8 Page ID NUMBER Question 2 20 marks a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3 Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user Give three advantages and disadvantages of both systems GOOD LUCK 9 Page 4G ll A O O 67I 2 56 Exams docx 6 Page ID NUMBER A d R 1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R 62, R 32 R, R, R 29) Transform Fig 11b to Fig 11la given R 32, R 32, R 3N R R2 R, 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12 50 10 0 12 Q 4 V 15 0 6 V Figure 12 Vu 7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER 30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR 22) A 230 V lamp is rated to pass a current of 0 26 A Calculate its power outpu P 23) A current of 3 A flows through a 102 resistor Find the power developed by resistor P 5 Page ID NUMBER 4G ll A O O 67 2 55 Exams docx R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R2 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 Q resistor, given that R, 20 3 Page ID NUMBER 8 A 12 R2 Fig 4 I 14) Calculate the current in the 20 resistor, given R, 42 in fig 4 3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 4G ll A O O 67I 2 56 Exams docx ID NUMBER 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) I 27) Find the current in the third loop I (use mesh analysis method) I 6 Page ID NUMBER 4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig 5 For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is 4 Page ID NUMBER 1, R1 30 2 60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I O 67 2 55 Exams docx 7 Consider these two scenarios and comment on the reason for the observations Scenario 1 A bird standing on a bare energized high tension is not electrocuted Scenario 2 A human being touching a bare live wire without any protection is electrocuted 2 Page ID NUMBER 3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R, Figure 3 12) Find the total resistance of the circuit in figure 3 given R 8, R 3, R, 5, R 8 a R R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 2 resistor, given that R, 22 3 Page ID NUMBER I 8 A Fig 4 I 14) Calculate the current in the 2 resistor, given R, 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 ID NUMBER 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) 1, 27) Find the current in the third loop I (use mesh analysis method) I 4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER Section B Attempt all questions in this section in the answer booklet provided Question 1 10 marks a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 Page O 66 I 2 57 4G 3G Exams docx 8 Page ID NUMBER Question 2 20 marks a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3 Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user Give three advantages and disadvantages of both systems GOOD LUCK 9 Page 4G ll A O O 67I 2 56 Exams docx 6 Page ID NUMBER A d R 1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R 62, R 32 R, R, R 29) Transform Fig 11b to Fig 11la given R 32, R 32, R 3N R R2 R, 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12 50 10 0 12 Q 4 V 15 0 6 V Figure 12 Vu 7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER 30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR 22) A 230 V lamp is rated to pass a current of 0 26 A Calculate its power outpu P 23) A current of 3 A flows through a 102 resistor Find the power developed by resistor P 5 Page ID NUMBER 4G ll A O O 67 2 55 Exams docx R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R2 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 Q resistor, given that R, 20 3 Page ID NUMBER 8 A 12 R2 Fig 4 I 14) Calculate the current in the 20 resistor, given R, 42 in fig 4 3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 4G ll A O O 67I 2 56 Exams docx ID NUMBER 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) I 27) Find the current in the third loop I (use mesh analysis method) I 6 Page ID NUMBER 4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig 5 For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is 4 Page ID NUMBER 1, R1 30 2 60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I O 67 2 55 Exams docx 7 Consider these two scenarios and comment on the reason for the observations Scenario 1 A bird standing on a bare energized high tension is not electrocuted Scenario 2 A human being touching a bare live wire without any protection is electrocuted 2 Page ID NUMBER 3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R, Figure 3 12) Find the total resistance of the circuit in figure 3 given R 8, R 3, R, 5, R 8 a R R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 2 resistor, given that R, 22 3 Page ID NUMBER I 8 A Fig 4 I 14) Calculate the current in the 2 resistor, given R, 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 ID NUMBER 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) 1, 27) Find the current in the third loop I (use mesh analysis method) I 4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER Section B Attempt all questions in this section in the answer booklet provided Question 1 10 marks a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 Page O 66 I 2 57 4G 3G Exams docx 8 Page ID NUMBER Question 2 20 marks a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3 Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user Give three advantages and disadvantages of both systems GOOD LUCK 9 Page 4G ll A O O 67I 2 56 Exams docx 6 Page ID NUMBER A d R 1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R 62, R 32 R, R, R 29) Transform Fig 11b to Fig 11la given R 32, R 32, R 3N R R2 R, 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12 50 10 0 12 Q 4 V 15 0 6 V Figure 12 Vu 7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER 30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR 22) A 230 V lamp is rated to pass a current of 0 26 A Calculate its power outpu P 23) A current of 3 A flows through a 102 resistor Find the power developed by resistor P 5 Page ID NUMBER 4G ll A O O 67 2 55 Exams docx R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R2 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 Q resistor, given that R, 20 3 Page ID NUMBER 8 A 12 R2 Fig 4 I 14) Calculate the current in the 20 resistor, given R, 42 in fig 4 3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 4G ll A O O 67I 2 56 Exams docx ID NUMBER 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) I 27) Find the current in the third loop I (use mesh analysis method) I 6 Page ID NUMBER 4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig 5 For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is 4 Page ID NUMBER 1, R1 30 2 60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I O 67 2 55 Exams docx 7 Consider these two scenarios and comment on the reason for the observations Scenario 1 A bird standing on a bare energized high tension is not electrocuted Scenario 2 A human being touching a bare live wire without any protection is electrocuted 2 Page ID NUMBER 3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R, Figure 3 12) Find the total resistance of the circuit in figure 3 given R 8, R 3, R, 5, R 8 a R R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 2 resistor, given that R, 22 3 Page ID NUMBER I 8 A Fig 4 I 14) Calculate the current in the 2 resistor, given R, 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 ID NUMBER 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) 1, 27) Find the current in the third loop I (use mesh analysis method) I 4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER Section B Attempt all questions in this section in the answer booklet provided Question 1 10 marks a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 Page O 66 I 2 57 4G 3G Exams docx 8 Page ID NUMBER Question 2 20 marks a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3 Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user Give three advantages and disadvantages of both systems GOOD LUCK 9 Page 4G ll A O O 67I 2 56 Exams docx 6 Page ID NUMBER A d R 1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R 62, R 32 R, R, R 29) Transform Fig 11b to Fig 11la given R 32, R 32, R 3N R R2 R, 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12 50 10 0 12 Q 4 V 15 0 6 V Figure 12 Vu 7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER 30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR 22) A 230 V lamp is rated to pass a current of 0 26 A Calculate its power outpu P 23) A current of 3 A flows through a 102 resistor Find the power developed by resistor P 5 Page ID NUMBER 4G ll A O O 67 2 55 Exams docx R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R2 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 Q resistor, given that R, 20 3 Page ID NUMBER 8 A 12 R2 Fig 4 I 14) Calculate the current in the 20 resistor, given R, 42 in fig 4 3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 4G ll A O O 67I 2 56 Exams docx ID NUMBER 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) I 27) Find the current in the third loop I (use mesh analysis method) I 6 Page ID NUMBER 4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig 5 For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is 4 Page ID NUMBER 1, R1 30 2 60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I O 67 2 55 Exams docx 7 Consider these two scenarios and comment on the reason for the observations Scenario 1 A bird standing on a bare energized high tension is not electrocuted Scenario 2 A human being touching a bare live wire without any protection is electrocuted 2 Page ID NUMBER 3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R, Figure 3 12) Find the total resistance of the circuit in figure 3 given R 8, R 3, R, 5, R 8 a R R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 2 resistor, given that R, 22 3 Page ID NUMBER I 8 A Fig 4 I 14) Calculate the current in the 2 resistor, given R, 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 ID NUMBER 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) 1, 27) Find the current in the third loop I (use mesh analysis method) I 4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER Section B Attempt all questions in this section in the answer booklet provided Question 1 10 marks a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 Page O 66 I 2 57 4G 3G Exams docx 8 Page ID NUMBER Question 2 20 marks a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3 Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user Give three advantages and disadvantages of both systems GOOD LUCK 9 Page 4G ll A O O 67I 2 56 Exams docx 6 Page ID NUMBER A d R 1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R 62, R 32 R, R, R 29) Transform Fig 11b to Fig 11la given R 32, R 32, R 3N R R2 R, 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12 50 10 0 12 Q 4 V 15 0 6 V Figure 12 Vu 7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER 30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR 22) A 230 V lamp is rated to pass a current of 0 26 A Calculate its power outpu P 23) A current of 3 A flows through a 102 resistor Find the power developed by resistor P 5 Page ID NUMBER 4G ll A O O 67 2 55 Exams docx R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R2 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 Q resistor, given that R, 20 3 Page ID NUMBER 8 A 12 R2 Fig 4 I 14) Calculate the current in the 20 resistor, given R, 42 in fig 4 3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 4G ll A O O 67I 2 56 Exams docx ID NUMBER 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) I 27) Find the current in the third loop I (use mesh analysis method) I 6 Page ID NUMBER 4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig 5 For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is 4 Page ID NUMBER 1, R1 30 2 60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I O 67 2 55 Exams docx 7 Consider these two scenarios and comment on the reason for the observations Scenario 1 A bird standing on a bare energized high tension is not electrocuted Scenario 2 A human being touching a bare live wire without any protection is electrocuted 2 Page ID NUMBER 3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R, Figure 3 12) Find the total resistance of the circuit in figure 3 given R 8, R 3, R, 5, R 8 a R R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 2 resistor, given that R, 22 3 Page ID NUMBER I 8 A Fig 4 I 14) Calculate the current in the 2 resistor, given R, 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 ID NUMBER 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) 1, 27) Find the current in the third loop I (use mesh analysis method) I 4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER Section B Attempt all questions in this section in the answer booklet provided Question 1 10 marks a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 Page O 66 I 2 57 4G 3G Exams docx 8 Page ID NUMBER Question 2 20 marks a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3 Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user Give three advantages and disadvantages of both systems GOOD LUCK 9 Page 4G ll A O O 67I 2 56 Exams docx 6 Page ID NUMBER A d R 1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R 62, R 32 R, R, R 29) Transform Fig 11b to Fig 11la given R 32, R 32, R 3N R R2 R, 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12 50 10 0 12 Q 4 V 15 0 6 V Figure 12 Vu 7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER 30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR 22) A 230 V lamp is rated to pass a current of 0 26 A Calculate its power outpu P 23) A current of 3 A flows through a 102 resistor Find the power developed by resistor P 5 Page ID NUMBER 4G ll A O O 67 2 55 Exams docx R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R2 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 Q resistor, given that R, 20 3 Page ID NUMBER 8 A 12 R2 Fig 4 I 14) Calculate the current in the 20 resistor, given R, 42 in fig 4 3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 4G ll A O O 67I 2 56 Exams docx ID NUMBER 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) I 27) Find the current in the third loop I (use mesh analysis method) I 6 Page ID NUMBER 4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig 5 For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is 4 Page ID NUMBER 1, R1 30 2 60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I O 67 2 55 Exams docx 7 Consider these two scenarios and comment on the reason for the observations Scenario 1 A bird standing on a bare energized high tension is not electrocuted Scenario 2 A human being touching a bare live wire without any protection is electrocuted 2 Page ID NUMBER 3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R, Figure 3 12) Find the total resistance of the circuit in figure 3 given R 8, R 3, R, 5, R 8 a R R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 2 resistor, given that R, 22 3 Page ID NUMBER I 8 A Fig 4 I 14) Calculate the current in the 2 resistor, given R, 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 ID NUMBER 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) 1, 27) Find the current in the third loop I (use mesh analysis method) I 4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER Section B Attempt all questions in this section in the answer booklet provided Question 1 10 marks a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 Page O 66 I 2 57 4G 3G Exams docx 8 Page ID NUMBER Question 2 20 marks a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3 Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user Give three advantages and disadvantages of both systems GOOD LUCK 9 Page 4G ll A O O 67I 2 56 Exams docx 6 Page ID NUMBER A d R 1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R 62, R 32 R, R, R 29) Transform Fig 11b to Fig 11la given R 32, R 32, R 3N R R2 R, 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12 50 10 0 12 Q 4 V 15 0 6 V Figure 12 Vu 7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER 30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR 22) A 230 V lamp is rated to pass a current of 0 26 A Calculate its power outpu P 23) A current of 3 A flows through a 102 resistor Find the power developed by resistor P 5 Page ID NUMBER 4G ll A O O 67 2 55 Exams docx R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R2 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 Q resistor, given that R, 20 3 Page ID NUMBER 8 A 12 R2 Fig 4 I 14) Calculate the current in the 20 resistor, given R, 42 in fig 4 3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 4G ll A O O 67I 2 56 Exams docx ID NUMBER 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) I 27) Find the current in the third loop I (use mesh analysis method) I 6 Page ID NUMBER 4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig 5 For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is 4 Page ID NUMBER 1, R1 30 2 60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I O 67 2 55 Exams docx 7 Consider these two scenarios and comment on the reason for the observations Scenario 1 A bird standing on a bare energized high tension is not electrocuted Scenario 2 A human being touching a bare live wire without any protection is electrocuted 2 Page ID NUMBER 3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R, Figure 3 12) Find the total resistance of the circuit in figure 3 given R 8, R 3, R, 5, R 8 a R R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 2 resistor, given that R, 22 3 Page ID NUMBER I 8 A Fig 4 I 14) Calculate the current in the 2 resistor, given R, 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 ID NUMBER 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) 1, 27) Find the current in the third loop I (use mesh analysis method) I 4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER Section B Attempt all questions in this section in the answer booklet provided Question 1 10 marks a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 Page O 66 I 2 57 4G 3G Exams docx 8 Page ID NUMBER Question 2 20 marks a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3 Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user Give three advantages and disadvantages of both systems GOOD LUCK 9 Page 4G ll A O O 67I 2 56 Exams docx 6 Page ID NUMBER A d R 1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R 62, R 32 R, R, R 29) Transform Fig 11b to Fig 11la given R 32, R 32, R 3N R R2 R, 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12 50 10 0 12 Q 4 V 15 0 6 V Figure 12 Vu 7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER 30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR 22) A 230 V lamp is rated to pass a current of 0 26 A Calculate its power outpu P 23) A current of 3 A flows through a 102 resistor Find the power developed by resistor P 5 Page ID NUMBER 4G ll A O O 67 2 55 Exams docx R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R2 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 Q resistor, given that R, 20 3 Page ID NUMBER 8 A 12 R2 Fig 4 I 14) Calculate the current in the 20 resistor, given R, 42 in fig 4 3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 4G ll A O O 67I 2 56 Exams docx ID NUMBER 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) I 27) Find the current in the third loop I (use mesh analysis method) I 6 Page ID NUMBER 4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig 5 For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is 4 Page ID NUMBER 1, R1 30 2 60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I O 67 2 55 Exams docx 7 Consider these two scenarios and comment on the reason for the observations Scenario 1 A bird standing on a bare energized high tension is not electrocuted Scenario 2 A human being touching a bare live wire without any protection is electrocuted 2 Page ID NUMBER 3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R, Figure 3 12) Find the total resistance of the circuit in figure 3 given R 8, R 3, R, 5, R 8 a R R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 2 resistor, given that R, 22 3 Page ID NUMBER I 8 A Fig 4 I 14) Calculate the current in the 2 resistor, given R, 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 ID NUMBER 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) 1, 27) Find the current in the third loop I (use mesh analysis method) I 4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER Section B Attempt all questions in this section in the answer booklet provided Question 1 10 marks a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 Page O 66 I 2 57 4G 3G Exams docx 8 Page ID NUMBER Question 2 20 marks a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3 Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user Give three advantages and disadvantages of both systems GOOD LUCK 9 Page 4G ll A O O 67I 2 56 Exams docx 6 Page ID NUMBER A d R 1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R 62, R 32 R, R, R 29) Transform Fig 11b to Fig 11la given R 32, R 32, R 3N R R2 R, 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12 50 10 0 12 Q 4 V 15 0 6 V Figure 12 Vu 7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER 30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR 22) A 230 V lamp is rated to pass a current of 0 26 A Calculate its power outpu P 23) A current of 3 A flows through a 102 resistor Find the power developed by resistor P 5 Page ID NUMBER 4G ll A O O 67 2 55 Exams docx R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R2 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 Q resistor, given that R, 20 3 Page ID NUMBER 8 A 12 R2 Fig 4 I 14) Calculate the current in the 20 resistor, given R, 42 in fig 4 3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 4G ll A O O 67I 2 56 Exams docx ID NUMBER 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) I 27) Find the current in the third loop I (use mesh analysis method) I 6 Page ID NUMBER 4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig 5 For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is 4 Page ID NUMBER 1, R1 30 2 60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I O 67 2 55 Exams docx 7 Consider these two scenarios and comment on the reason for the observations Scenario 1 A bird standing on a bare energized high tension is not electrocuted Scenario 2 A human being touching a bare live wire without any protection is electrocuted 2 Page ID NUMBER 3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R, Figure 3 12) Find the total resistance of the circuit in figure 3 given R 8, R 3, R, 5, R 8 a R R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 2 resistor, given that R, 22 3 Page ID NUMBER I 8 A Fig 4 I 14) Calculate the current in the 2 resistor, given R, 42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 ID NUMBER 12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) 1, 27) Find the current in the third loop I (use mesh analysis method) I 4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER Section B Attempt all questions in this section in the answer booklet provided Question 1 10 marks a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8 Page O 66 I 2 57 4G 3G Exams docx 8 Page ID NUMBER Question 2 20 marks a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3 Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user Give three advantages and disadvantages of both systems GOOD LUCK 9 Page 4G ll A O O 67I 2 56 Exams docx 6 Page ID NUMBER A d R 1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R 62, R 32 R, R, R 29) Transform Fig 11b to Fig 11la given R 32, R 32, R 3N R R2 R, 30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12 50 10 0 12 Q 4 V 15 0 6 V Figure 12 Vu 7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER 30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I 20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR 22) A 230 V lamp is rated to pass a current of 0 26 A Calculate its power outpu P 23) A current of 3 A flows through a 102 resistor Find the power developed by resistor P 5 Page ID NUMBER 4G ll A O O 67 2 55 Exams docx R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R2 3, R, 5, R 8 a Rr 13) A current of 8 A is shared between two resistors in the network shown in Fig 4 Calculate the current in the 2 Q resistor, given that R, 20 3 Page ID NUMBER 8 A 12 R2 Fig 4 I 14) Calculate the current in the 20 resistor, given R, 42 in fig 4 3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig 5 4G ll A O O 67I 2 56 Exams docx ID NUMBER 12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I, I, 20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I, 26) Find the current in the second loop I, (use mesh analysis method) I 27) Find the current in the third loop I (use mesh analysis method) I 6 Page ID NUMBER 4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig 5 For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is 4 Page ID NUMBER 1, R1 30 2 60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I O 67 2 55 Exams docx 7 Consider these two scenarios and comment on the reason for the observations Scenario 1 A bird standing on a bare energized high tension is not electrocuted Scenario 2 A human being touching a bare live wire without any protection is electrocuted 2 Page ID NUMBER 3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle 8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R, Figure 3 12) Find the total resistance of the circuit in figure 3 given R 8, R 3, R, 5, R 8 a R

Question

R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R  3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 2 resistor, given that R,   22 3   Page ID NUMBER    I 8 A Fig 4 I   14) Calculate the current in the 2 resistor, given R,  42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  ID NUMBER   12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I,     I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,     26) Find the current in the second loop I, (use mesh analysis method) 1,    27) Find the current in the third loop I  (use mesh analysis method) I    4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER   Section B Attempt all questions in this section in the answer booklet provided  Question 1  10 marks  a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8   Page O 66 I 2 57 4G 3G Exams docx 8   Page ID NUMBER   Question 2  20 marks  a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3  Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user  Give three advantages and disadvantages of both systems  GOOD LUCK 9  Page 4G ll A O O 67I 2 56 Exams docx   6  Page ID NUMBER   A d R  1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R   62, R    32 R, R, R   29) Transform Fig 11b to Fig 11la given R    32, R  32, R    3N R   R2 R,   30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12  50 10 0 12 Q  4 V 15 0 6 V Figure 12 Vu   7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER    30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I   20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR   22) A 230 V lamp is rated to pass a current of 0 26 A  Calculate its power outpu P   23) A current of 3 A flows through a 102 resistor  Find the power developed by resistor  P   5  Page ID NUMBER    4G ll A O O 67 2 55 Exams docx   R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R,   8, R2   3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 Q resistor, given that R,  20 3  Page ID NUMBER     8 A 12 R2 Fig 4 I   14) Calculate the current in the 20 resistor, given R,  42 in fig 4  3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  4G ll A O O 67I 2 56 Exams docx ID NUMBER   12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I,   I,   20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,   26) Find the current in the second loop I, (use mesh analysis method) I       27) Find the current in the third loop I (use mesh analysis method) I  6  Page ID NUMBER  4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig  5  For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is  4   Page ID NUMBER    1, R1 30 2    60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I,    20) For the network shown in fig 6 find I, I   O 67    2 55 Exams docx 7  Consider these two scenarios and comment on the reason for the observations  Scenario 1  A bird standing on a bare energized high tension is not electrocuted Scenario 2  A human being touching a bare live wire without any protection is electrocuted  2 Page ID NUMBER   3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle  8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,          Figure 3 12) Find the total resistance of the circuit in figure 3 given R    8, R    3, R,   5, R  8 a  R               R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R  3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 2 resistor, given that R,   22 3   Page ID NUMBER    I 8 A Fig 4 I   14) Calculate the current in the 2 resistor, given R,  42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  ID NUMBER   12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I,     I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,     26) Find the current in the second loop I, (use mesh analysis method) 1,    27) Find the current in the third loop I  (use mesh analysis method) I    4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER   Section B Attempt all questions in this section in the answer booklet provided  Question 1  10 marks  a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8   Page O 66 I 2 57 4G 3G Exams docx 8   Page ID NUMBER   Question 2  20 marks  a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3  Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user  Give three advantages and disadvantages of both systems  GOOD LUCK 9  Page 4G ll A O O 67I 2 56 Exams docx   6  Page ID NUMBER   A d R  1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R   62, R    32 R, R, R   29) Transform Fig 11b to Fig 11la given R    32, R  32, R    3N R   R2 R,   30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12  50 10 0 12 Q  4 V 15 0 6 V Figure 12 Vu   7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER    30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I   20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR   22) A 230 V lamp is rated to pass a current of 0 26 A  Calculate its power outpu P   23) A current of 3 A flows through a 102 resistor  Find the power developed by resistor  P   5  Page ID NUMBER    4G ll A O O 67 2 55 Exams docx   R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R,   8, R2   3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 Q resistor, given that R,  20 3  Page ID NUMBER     8 A 12 R2 Fig 4 I   14) Calculate the current in the 20 resistor, given R,  42 in fig 4  3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  4G ll A O O 67I 2 56 Exams docx ID NUMBER   12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I,   I,   20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,   26) Find the current in the second loop I, (use mesh analysis method) I       27) Find the current in the third loop I (use mesh analysis method) I  6  Page ID NUMBER  4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig  5  For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is  4   Page ID NUMBER    1, R1 30 2    60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I,    20) For the network shown in fig 6 find I, I   O 67    2 55 Exams docx 7  Consider these two scenarios and comment on the reason for the observations  Scenario 1  A bird standing on a bare energized high tension is not electrocuted Scenario 2  A human being touching a bare live wire without any protection is electrocuted  2 Page ID NUMBER   3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle  8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,          Figure 3 12) Find the total resistance of the circuit in figure 3 given R    8, R    3, R,   5, R  8 a  R               R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R  3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 2 resistor, given that R,   22 3   Page ID NUMBER    I 8 A Fig 4 I   14) Calculate the current in the 2 resistor, given R,  42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  ID NUMBER   12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I,     I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,     26) Find the current in the second loop I, (use mesh analysis method) 1,    27) Find the current in the third loop I  (use mesh analysis method) I    4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER   Section B Attempt all questions in this section in the answer booklet provided  Question 1  10 marks  a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8   Page O 66 I 2 57 4G 3G Exams docx 8   Page ID NUMBER   Question 2  20 marks  a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3  Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user  Give three advantages and disadvantages of both systems  GOOD LUCK 9  Page 4G ll A O O 67I 2 56 Exams docx   6  Page ID NUMBER   A d R  1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R   62, R    32 R, R, R   29) Transform Fig 11b to Fig 11la given R    32, R  32, R    3N R   R2 R,   30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12  50 10 0 12 Q  4 V 15 0 6 V Figure 12 Vu   7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER    30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I   20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR   22) A 230 V lamp is rated to pass a current of 0 26 A  Calculate its power outpu P   23) A current of 3 A flows through a 102 resistor  Find the power developed by resistor  P   5  Page ID NUMBER    4G ll A O O 67 2 55 Exams docx   R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R,   8, R2   3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 Q resistor, given that R,  20 3  Page ID NUMBER     8 A 12 R2 Fig 4 I   14) Calculate the current in the 20 resistor, given R,  42 in fig 4  3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  4G ll A O O 67I 2 56 Exams docx ID NUMBER   12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I,   I,   20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,   26) Find the current in the second loop I, (use mesh analysis method) I       27) Find the current in the third loop I (use mesh analysis method) I  6  Page ID NUMBER  4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig  5  For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is  4   Page ID NUMBER    1, R1 30 2    60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I,    20) For the network shown in fig 6 find I, I   O 67    2 55 Exams docx 7  Consider these two scenarios and comment on the reason for the observations  Scenario 1  A bird standing on a bare energized high tension is not electrocuted Scenario 2  A human being touching a bare live wire without any protection is electrocuted  2 Page ID NUMBER   3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle  8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,          Figure 3 12) Find the total resistance of the circuit in figure 3 given R    8, R    3, R,   5, R  8 a  R               R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R  3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 2 resistor, given that R,   22 3   Page ID NUMBER    I 8 A Fig 4 I   14) Calculate the current in the 2 resistor, given R,  42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  ID NUMBER   12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I,     I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,     26) Find the current in the second loop I, (use mesh analysis method) 1,    27) Find the current in the third loop I  (use mesh analysis method) I    4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER   Section B Attempt all questions in this section in the answer booklet provided  Question 1  10 marks  a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8   Page O 66 I 2 57 4G 3G Exams docx 8   Page ID NUMBER   Question 2  20 marks  a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3  Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user  Give three advantages and disadvantages of both systems  GOOD LUCK 9  Page 4G ll A O O 67I 2 56 Exams docx   6  Page ID NUMBER   A d R  1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R   62, R    32 R, R, R   29) Transform Fig 11b to Fig 11la given R    32, R  32, R    3N R   R2 R,   30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12  50 10 0 12 Q  4 V 15 0 6 V Figure 12 Vu   7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER    30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I   20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR   22) A 230 V lamp is rated to pass a current of 0 26 A  Calculate its power outpu P   23) A current of 3 A flows through a 102 resistor  Find the power developed by resistor  P   5  Page ID NUMBER    4G ll A O O 67 2 55 Exams docx   R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R,   8, R2   3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 Q resistor, given that R,  20 3  Page ID NUMBER     8 A 12 R2 Fig 4 I   14) Calculate the current in the 20 resistor, given R,  42 in fig 4  3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  4G ll A O O 67I 2 56 Exams docx ID NUMBER   12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I,   I,   20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,   26) Find the current in the second loop I, (use mesh analysis method) I       27) Find the current in the third loop I (use mesh analysis method) I  6  Page ID NUMBER  4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig  5  For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is  4   Page ID NUMBER    1, R1 30 2    60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I,    20) For the network shown in fig 6 find I, I   O 67    2 55 Exams docx 7  Consider these two scenarios and comment on the reason for the observations  Scenario 1  A bird standing on a bare energized high tension is not electrocuted Scenario 2  A human being touching a bare live wire without any protection is electrocuted  2 Page ID NUMBER   3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle  8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,          Figure 3 12) Find the total resistance of the circuit in figure 3 given R    8, R    3, R,   5, R  8 a  R               R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R  3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 2 resistor, given that R,   22 3   Page ID NUMBER    I 8 A Fig 4 I   14) Calculate the current in the 2 resistor, given R,  42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  ID NUMBER   12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I,     I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,     26) Find the current in the second loop I, (use mesh analysis method) 1,    27) Find the current in the third loop I  (use mesh analysis method) I    4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER   Section B Attempt all questions in this section in the answer booklet provided  Question 1  10 marks  a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8   Page O 66 I 2 57 4G 3G Exams docx 8   Page ID NUMBER   Question 2  20 marks  a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3  Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user  Give three advantages and disadvantages of both systems  GOOD LUCK 9  Page 4G ll A O O 67I 2 56 Exams docx   6  Page ID NUMBER   A d R  1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R   62, R    32 R, R, R   29) Transform Fig 11b to Fig 11la given R    32, R  32, R    3N R   R2 R,   30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12  50 10 0 12 Q  4 V 15 0 6 V Figure 12 Vu   7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER    30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I   20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR   22) A 230 V lamp is rated to pass a current of 0 26 A  Calculate its power outpu P   23) A current of 3 A flows through a 102 resistor  Find the power developed by resistor  P   5  Page ID NUMBER    4G ll A O O 67 2 55 Exams docx   R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R,   8, R2   3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 Q resistor, given that R,  20 3  Page ID NUMBER     8 A 12 R2 Fig 4 I   14) Calculate the current in the 20 resistor, given R,  42 in fig 4  3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  4G ll A O O 67I 2 56 Exams docx ID NUMBER   12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I,   I,   20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,   26) Find the current in the second loop I, (use mesh analysis method) I       27) Find the current in the third loop I (use mesh analysis method) I  6  Page ID NUMBER  4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig  5  For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is  4   Page ID NUMBER    1, R1 30 2    60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I,    20) For the network shown in fig 6 find I, I   O 67    2 55 Exams docx 7  Consider these two scenarios and comment on the reason for the observations  Scenario 1  A bird standing on a bare energized high tension is not electrocuted Scenario 2  A human being touching a bare live wire without any protection is electrocuted  2 Page ID NUMBER   3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle  8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,          Figure 3 12) Find the total resistance of the circuit in figure 3 given R    8, R    3, R,   5, R  8 a  R               R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R  3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 2 resistor, given that R,   22 3   Page ID NUMBER    I 8 A Fig 4 I   14) Calculate the current in the 2 resistor, given R,  42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  ID NUMBER   12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I,     I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,     26) Find the current in the second loop I, (use mesh analysis method) 1,    27) Find the current in the third loop I  (use mesh analysis method) I    4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER   Section B Attempt all questions in this section in the answer booklet provided  Question 1  10 marks  a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8   Page O 66 I 2 57 4G 3G Exams docx 8   Page ID NUMBER   Question 2  20 marks  a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3  Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user  Give three advantages and disadvantages of both systems  GOOD LUCK 9  Page 4G ll A O O 67I 2 56 Exams docx   6  Page ID NUMBER   A d R  1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R   62, R    32 R, R, R   29) Transform Fig 11b to Fig 11la given R    32, R  32, R    3N R   R2 R,   30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12  50 10 0 12 Q  4 V 15 0 6 V Figure 12 Vu   7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER    30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I   20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR   22) A 230 V lamp is rated to pass a current of 0 26 A  Calculate its power outpu P   23) A current of 3 A flows through a 102 resistor  Find the power developed by resistor  P   5  Page ID NUMBER    4G ll A O O 67 2 55 Exams docx   R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R,   8, R2   3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 Q resistor, given that R,  20 3  Page ID NUMBER     8 A 12 R2 Fig 4 I   14) Calculate the current in the 20 resistor, given R,  42 in fig 4  3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  4G ll A O O 67I 2 56 Exams docx ID NUMBER   12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I,   I,   20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,   26) Find the current in the second loop I, (use mesh analysis method) I       27) Find the current in the third loop I (use mesh analysis method) I  6  Page ID NUMBER  4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig  5  For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is  4   Page ID NUMBER    1, R1 30 2    60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I,    20) For the network shown in fig 6 find I, I   O 67    2 55 Exams docx 7  Consider these two scenarios and comment on the reason for the observations  Scenario 1  A bird standing on a bare energized high tension is not electrocuted Scenario 2  A human being touching a bare live wire without any protection is electrocuted  2 Page ID NUMBER   3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle  8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,          Figure 3 12) Find the total resistance of the circuit in figure 3 given R    8, R    3, R,   5, R  8 a  R               R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R  3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 2 resistor, given that R,   22 3   Page ID NUMBER    I 8 A Fig 4 I   14) Calculate the current in the 2 resistor, given R,  42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  ID NUMBER   12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I,     I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,     26) Find the current in the second loop I, (use mesh analysis method) 1,    27) Find the current in the third loop I  (use mesh analysis method) I    4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER   Section B Attempt all questions in this section in the answer booklet provided  Question 1  10 marks  a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8   Page O 66 I 2 57 4G 3G Exams docx 8   Page ID NUMBER   Question 2  20 marks  a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3  Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user  Give three advantages and disadvantages of both systems  GOOD LUCK 9  Page 4G ll A O O 67I 2 56 Exams docx   6  Page ID NUMBER   A d R  1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R   62, R    32 R, R, R   29) Transform Fig 11b to Fig 11la given R    32, R  32, R    3N R   R2 R,   30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12  50 10 0 12 Q  4 V 15 0 6 V Figure 12 Vu   7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER    30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I   20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR   22) A 230 V lamp is rated to pass a current of 0 26 A  Calculate its power outpu P   23) A current of 3 A flows through a 102 resistor  Find the power developed by resistor  P   5  Page ID NUMBER    4G ll A O O 67 2 55 Exams docx   R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R,   8, R2   3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 Q resistor, given that R,  20 3  Page ID NUMBER     8 A 12 R2 Fig 4 I   14) Calculate the current in the 20 resistor, given R,  42 in fig 4  3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  4G ll A O O 67I 2 56 Exams docx ID NUMBER   12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I,   I,   20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,   26) Find the current in the second loop I, (use mesh analysis method) I       27) Find the current in the third loop I (use mesh analysis method) I  6  Page ID NUMBER  4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig  5  For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is  4   Page ID NUMBER    1, R1 30 2    60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I,    20) For the network shown in fig 6 find I, I   O 67    2 55 Exams docx 7  Consider these two scenarios and comment on the reason for the observations  Scenario 1  A bird standing on a bare energized high tension is not electrocuted Scenario 2  A human being touching a bare live wire without any protection is electrocuted  2 Page ID NUMBER   3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle  8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,          Figure 3 12) Find the total resistance of the circuit in figure 3 given R    8, R    3, R,   5, R  8 a  R               R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R  3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 2 resistor, given that R,   22 3   Page ID NUMBER    I 8 A Fig 4 I   14) Calculate the current in the 2 resistor, given R,  42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  ID NUMBER   12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I,     I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,     26) Find the current in the second loop I, (use mesh analysis method) 1,    27) Find the current in the third loop I  (use mesh analysis method) I    4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER   Section B Attempt all questions in this section in the answer booklet provided  Question 1  10 marks  a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8   Page O 66 I 2 57 4G 3G Exams docx 8   Page ID NUMBER   Question 2  20 marks  a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3  Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user  Give three advantages and disadvantages of both systems  GOOD LUCK 9  Page 4G ll A O O 67I 2 56 Exams docx   6  Page ID NUMBER   A d R  1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R   62, R    32 R, R, R   29) Transform Fig 11b to Fig 11la given R    32, R  32, R    3N R   R2 R,   30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12  50 10 0 12 Q  4 V 15 0 6 V Figure 12 Vu   7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER    30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I   20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR   22) A 230 V lamp is rated to pass a current of 0 26 A  Calculate its power outpu P   23) A current of 3 A flows through a 102 resistor  Find the power developed by resistor  P   5  Page ID NUMBER    4G ll A O O 67 2 55 Exams docx   R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R,   8, R2   3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 Q resistor, given that R,  20 3  Page ID NUMBER     8 A 12 R2 Fig 4 I   14) Calculate the current in the 20 resistor, given R,  42 in fig 4  3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  4G ll A O O 67I 2 56 Exams docx ID NUMBER   12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I,   I,   20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,   26) Find the current in the second loop I, (use mesh analysis method) I       27) Find the current in the third loop I (use mesh analysis method) I  6  Page ID NUMBER  4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig  5  For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is  4   Page ID NUMBER    1, R1 30 2    60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I,    20) For the network shown in fig 6 find I, I   O 67    2 55 Exams docx 7  Consider these two scenarios and comment on the reason for the observations  Scenario 1  A bird standing on a bare energized high tension is not electrocuted Scenario 2  A human being touching a bare live wire without any protection is electrocuted  2 Page ID NUMBER   3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle  8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,          Figure 3 12) Find the total resistance of the circuit in figure 3 given R    8, R    3, R,   5, R  8 a  R               R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R  3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 2 resistor, given that R,   22 3   Page ID NUMBER    I 8 A Fig 4 I   14) Calculate the current in the 2 resistor, given R,  42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  ID NUMBER   12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I,     I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,     26) Find the current in the second loop I, (use mesh analysis method) 1,    27) Find the current in the third loop I  (use mesh analysis method) I    4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER   Section B Attempt all questions in this section in the answer booklet provided  Question 1  10 marks  a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8   Page O 66 I 2 57 4G 3G Exams docx 8   Page ID NUMBER   Question 2  20 marks  a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3  Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user  Give three advantages and disadvantages of both systems  GOOD LUCK 9  Page 4G ll A O O 67I 2 56 Exams docx   6  Page ID NUMBER   A d R  1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R   62, R    32 R, R, R   29) Transform Fig 11b to Fig 11la given R    32, R  32, R    3N R   R2 R,   30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12  50 10 0 12 Q  4 V 15 0 6 V Figure 12 Vu   7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER    30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I   20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR   22) A 230 V lamp is rated to pass a current of 0 26 A  Calculate its power outpu P   23) A current of 3 A flows through a 102 resistor  Find the power developed by resistor  P   5  Page ID NUMBER    4G ll A O O 67 2 55 Exams docx   R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R,   8, R2   3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 Q resistor, given that R,  20 3  Page ID NUMBER     8 A 12 R2 Fig 4 I   14) Calculate the current in the 20 resistor, given R,  42 in fig 4  3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  4G ll A O O 67I 2 56 Exams docx ID NUMBER   12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I,   I,   20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,   26) Find the current in the second loop I, (use mesh analysis method) I       27) Find the current in the third loop I (use mesh analysis method) I  6  Page ID NUMBER  4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig  5  For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is  4   Page ID NUMBER    1, R1 30 2    60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I,    20) For the network shown in fig 6 find I, I   O 67    2 55 Exams docx 7  Consider these two scenarios and comment on the reason for the observations  Scenario 1  A bird standing on a bare energized high tension is not electrocuted Scenario 2  A human being touching a bare live wire without any protection is electrocuted  2 Page ID NUMBER   3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle  8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,          Figure 3 12) Find the total resistance of the circuit in figure 3 given R    8, R    3, R,   5, R  8 a  R               R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R  3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 2 resistor, given that R,   22 3   Page ID NUMBER    I 8 A Fig 4 I   14) Calculate the current in the 2 resistor, given R,  42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  ID NUMBER   12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I,     I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,     26) Find the current in the second loop I, (use mesh analysis method) 1,    27) Find the current in the third loop I  (use mesh analysis method) I    4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER   Section B Attempt all questions in this section in the answer booklet provided  Question 1  10 marks  a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8   Page O 66 I 2 57 4G 3G Exams docx 8   Page ID NUMBER   Question 2  20 marks  a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3  Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user  Give three advantages and disadvantages of both systems  GOOD LUCK 9  Page 4G ll A O O 67I 2 56 Exams docx   6  Page ID NUMBER   A d R  1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R   62, R    32 R, R, R   29) Transform Fig 11b to Fig 11la given R    32, R  32, R    3N R   R2 R,   30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12  50 10 0 12 Q  4 V 15 0 6 V Figure 12 Vu   7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER    30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I   20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR   22) A 230 V lamp is rated to pass a current of 0 26 A  Calculate its power outpu P   23) A current of 3 A flows through a 102 resistor  Find the power developed by resistor  P   5  Page ID NUMBER    4G ll A O O 67 2 55 Exams docx   R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R,   8, R2   3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 Q resistor, given that R,  20 3  Page ID NUMBER     8 A 12 R2 Fig 4 I   14) Calculate the current in the 20 resistor, given R,  42 in fig 4  3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  4G ll A O O 67I 2 56 Exams docx ID NUMBER   12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I,   I,   20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,   26) Find the current in the second loop I, (use mesh analysis method) I       27) Find the current in the third loop I (use mesh analysis method) I  6  Page ID NUMBER  4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig  5  For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is  4   Page ID NUMBER    1, R1 30 2    60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I,    20) For the network shown in fig 6 find I, I   O 67    2 55 Exams docx 7  Consider these two scenarios and comment on the reason for the observations  Scenario 1  A bird standing on a bare energized high tension is not electrocuted Scenario 2  A human being touching a bare live wire without any protection is electrocuted  2 Page ID NUMBER   3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle  8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,          Figure 3 12) Find the total resistance of the circuit in figure 3 given R    8, R    3, R,   5, R  8 a  R               R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R  3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 2 resistor, given that R,   22 3   Page ID NUMBER    I 8 A Fig 4 I   14) Calculate the current in the 2 resistor, given R,  42 in fig 4 Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  ID NUMBER   12 1 18 2 22 10 V 20 V Fig 24) Calculate the currents in fig 8 I,     I, 20 2 30 2 40 12 10 2 20 V 50 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,     26) Find the current in the second loop I, (use mesh analysis method) 1,    27) Find the current in the third loop I  (use mesh analysis method) I    4G 3G O 66 I 2 57 Exams docx 7 Page ID NUMBER   Section B Attempt all questions in this section in the answer booklet provided  Question 1  10 marks  a) Find the total resistance of the circuit RAB of figure la B 102 102 100 50 152 30n Figure la b) Find the total current in the circuit in figure lb 20 2n A 20 20 30V 20 in in Figure 1b 8   Page O 66 I 2 57 4G 3G Exams docx 8   Page ID NUMBER   Question 2  20 marks  a) Use Thevenin's theorem to find the current through the 5Q resistor of the circuit in figure 2 20 50 20 b C e 30 20 7V 10 V a d f 20 Figure 2 b) Use Norton's theorem to find the current through the 32 resistor of the circuit in figure 2 Question 3  Write short notes explaining how electricity is generated at a hydropower station and thermal power station and how the electricity is transported to the end user  Give three advantages and disadvantages of both systems  GOOD LUCK 9  Page 4G ll A O O 67I 2 56 Exams docx   6  Page ID NUMBER   A d R  1 A R, Ry R, Ro B Co R1 (a) (b) Figure 11 28) Transform Fig 11 a to Fig 11 b given R, 22, R   62, R    32 R, R, R   29) Transform Fig 11b to Fig 11la given R    32, R  32, R    3N R   R2 R,   30) Using Thevenin's Network Theorem find VTH Wwhen finding the current through the 50 resistor in the circuit of fig 12  50 10 0 12 Q  4 V 15 0 6 V Figure 12 Vu   7 Page 4G ll A O O 67I 2 56 Exams docx ID NUMBER    30 2 60 2 R2 30 2 I 1 A Figure 6 19) For the network shown in fig 6 find I, I, 20) For the network shown in fig 6 find I, I   20 V R2 25 2 40 2 13 15 2 102 RA Figure 7 21) Calculate VAn in fig 7 VAR   22) A 230 V lamp is rated to pass a current of 0 26 A  Calculate its power outpu P   23) A current of 3 A flows through a 102 resistor  Find the power developed by resistor  P   5  Page ID NUMBER    4G ll A O O 67 2 55 Exams docx   R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R,   8, R2   3, R,   5, R  8 a  Rr   13) A current of 8 A is shared between two resistors in the network shown in Fig  4 Calculate the current in the 2 Q resistor, given that R,  20 3  Page ID NUMBER     8 A 12 R2 Fig 4 I   14) Calculate the current in the 20 resistor, given R,  42 in fig 4  3 A Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown in Fig  5  4G ll A O O 67I 2 56 Exams docx ID NUMBER   12 1 18 2 2 10 V 20 V Fig 24) Calculate the currents in fig 8 I,   I,   20 2 30 2 10 2 20 V 100 V S0 V Figure 10 25) Find the current in the first loop I, (use mesh analysis method) I,   26) Find the current in the second loop I, (use mesh analysis method) I       27) Find the current in the third loop I (use mesh analysis method) I  6  Page ID NUMBER  4G O 67I 2 56 Exams docx Fig 5 15) Write down the current relationships for junctions a, b and c of the network shown Fig  5  For junction a 16) For junction b 17) For junction c 18) Determine the currents I, I, and Is  4   Page ID NUMBER    1, R1 30 2    60 2 R2 R3 30 2 12 I 1 A Figure 6 19) For the network shown in fig 6 find I, I,    20) For the network shown in fig 6 find I, I   O 67    2 55 Exams docx 7  Consider these two scenarios and comment on the reason for the observations  Scenario 1  A bird standing on a bare energized high tension is not electrocuted Scenario 2  A human being touching a bare live wire without any protection is electrocuted  2 Page ID NUMBER   3 502 20 72 25V Find the current in each of the resistors of the circuit above using total resistance and voltage drop principle  8) Current through 20 resistor is 9) Current through 42 resistor is 10) Current through 52 resistor is 11) Total resistance of the circuit R,          Figure 3 12) Find the total resistance of the circuit in figure 3 given R    8, R    3, R,   5, R  8 a  R

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question 3 Flowing water creates energy that can be captured and turned into electricity This is cal...

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R, R R4 Figure 3 12) Find the total resistance of the circuit in figure 3 given R, 8, R. 3, R, = 5,

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