A=29 B=39 C=139 D=12 B= C= D= Will be graded: 1. There is a single loop circuit with three resistors as follows. Take RI=D Q2, R2= D/2 2 and R3= D/3 2 and connect to 12 V battery. a. What can you say about the connection of R1 , R2 and R3, Explain the circuit? (10 points) b. Calculate the equivalent resistance of the circuit (10 points) c. Calculate the current of the circuit (10 points) d. Calculate the voltage across each resistor? What law do you use in here? (15 points) e. Calculate the heat dissipation of each resistor? (10 points) f. Let's say these resistors are light bulbs. If you remove R3, what will happen to intensity of the rest? (10 points) f. Explain what will happen to the rest if one bulb is burnt (10 points) Do for practice and earn (25 points) for completion: 2. What is the potential difference VB - VA when the / = D/5 A in the circuit segment below? 20 92 20 V 12 V Dr. Hetti PHY 156 3.If R1 = B Q, R2 = B/5 02, R3 = D S, and 1 = 0.50 A, -WW Calculate resultant resistance? b. At what rate is heat being generated in these resistors? Calculate the net voltage on the circuit? 4. Two resistors are connected in series, R1 =B 2 and R2= D 2 to a battery of 12 V. What is the voltage across R,? b. What is the voltage across R2? c. Calculate the current on the loop? 5.Two lightbulbs A and B are connected in series to a constant voltage source. When a wire is connected across a and b, what can you say about the intensity of lights? 12 V = 12 V= 6. If the battery voltage is D V, and the resistances are R1=C/50 $2, R2=B/5 2 and R3=D/2 Q. (a) What is the total resistance? (b) Find the current? (c) Calculate the voltage drop in each resistor? (d) Calculate the total power dissipated by the circuit