#1

Three 100 0 resistors are connected as shown in the figure. The maximum power that can safely be delivered to any one resistor is 21.5 W. 100 I! a 100 S). b 100 U. G) (a) What is the maximum potential difference that can be applied to the terminals a and b? :V (b) For the voltage determined in part (a), what is the power delivered to each resistor? resistor on the left |:| W resistor at the top of the loop |:| W resistor at the bottom of the |oop|:| W (c) What is the total power delivered to the combination of resistors? |:|W Consider the circuit shown in the figure below. (Let R = 30.0 0.) 25.0 V 10.0 0 a 10.0 0 b 5.00 0 R 5.00 0 (a) Find the current in the 30.0-0 resistor. A (b) Find the potential difference between points a and b.Consider the following figure. 7.00 0 4.00 0 9.00 0 R a b (a) Find the equivalent resistance between points a and b in the figure. (R = 19.0 0) (b) Calculate the current in each resistor if a potential difference of 78.0 V is applied between points a and b. I (4.00 0) = A I (7.00 n) A I (19.0 0) = A I (9.00 0) =Calculate the power delivered to each resistor in the circuit shown in the figure below. (Let R1 = 5.00 Q, R2 = 2.00 0, and V = 21.0 V.) 1.00 I! 4.00ohm resistor: 1.00ohm resistor: EEEE What are the expected readings of the following in the figure below? (R = 9.20 0, AV = 5.30 V) (a) ideal ammeter (Give your answer in rnA.) Em (b) ideal voltmeter (Give your answer in volts.) :lv (c) What If? How would the readings in the ammeter (in mA) and voltmeter (in volts) change if the 4.50 V battery was flipped so that its positive terminal was to the right? ideal ammeter :] mA ideal voltmeter :] V The ammeter shown in the figure below reads 2.66 A. Find the following. 7.00 0 15.0 V + 5.00 0 12 2.00 0 + E (a) current I, (in A) A (b) current I, (in A) A (c) emf & (in volts) V (d) What If? For what value of & (in volts) will the current in the ammeter read 1.81 A?In the circuit in the figure below, determine the Foliowing. 40.0 V 80.0 V 20\" I). 80.0 S). 20.0 1.! 70.\" l). G) (a) the current in each resistor (Indicate the direction of the current ow through each resistor through the sign of your answer. Take upward current flow as positive.) Resistor ([1) Current (A) (b) the potential difference across the 20 Q resistor :V Find the potential difference across each resistor in the figure below. (R1 = 4.70 1, R2 = 3.60 [1, R3 = 3.20 (1, R4 = 2.40 11) 12.0VI I300 V |18.0 V Consider a series RC circuit as in the figure below for which R = 9.00 M0, C = 3.00 uF, and 8 = 25.0 V. + 3 G) (a) Find the time constant of the circuit. :15 (b) What is the maximum charge on the capacitor after the switch is thrown closed? Em (C) Find the current in the resistor 10.0 s after the switch is closed. EM A 2.00-nF capacitor with an initial charge of 4.80 uC is discharged through a 2.67-k resistor. (a) Calculate the current in the resistor 9.00 us after the resistor is connected across the terminals of the capacitor. (Let the positive direction of the current be dene such thatd_Q > 0.) df Em (b) What charge remains on the capacitor after 8.00 us? Em: (C) What is the (magnitude of the) maximum current in the resistor? :A