Exam 23: Circuits
Exam 1: Representing Motion113 Questions
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Exam 23: Circuits145 Questions
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As more resistors are added in series to a constant voltage source, the power supplied by the source
(Multiple Choice)
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Three identical capacitors are connected in series across a potential source (battery). If a charge of Q flows into this combination of capacitors, how much charge does each capacitor carry?
(Multiple Choice)
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The network shown is assembled with uncharged capacitors X , Y, and Z, with CX = 4.0 μF, CY = 6.0 μF, and CZ = 5.0 μF. The switches S1 and S2 are initially open, and a potential difference Vab = 120 V is applied between points a and b. After the network is assembled, switch S1 is then closed, but switch S2 is kept open. What is the final potential difference across capacitor X? 

(Multiple Choice)
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What is the potential drop from point A to point B for the circuit shown in the figure? The battery is ideal, and all the numbers are accurate to two significant figures. 

(Multiple Choice)
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For the circuit shown in the figure, C = 13 µF and R = 7.6 MΩ. Initially the switch S is open with the capacitor charged to a voltage of 80 V. The switch is then closed at time t = 0.00 s. What is the charge on the capacitor 40 s after closing the switch? 

(Multiple Choice)
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Each of the resistors shown in the figure has a resistance of What is the equivalent resistance between points a and b of this combination?

(Multiple Choice)
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A15-Ω resistor is connected in parallel with a 30-Ω resistor. If this combination is now connected in series with an ideal 9.0-V battery and a 20-Ω resistor, what is the current through the 15-Ω resistor?
(Multiple Choice)
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A 9-V battery is hooked up to two resistors in series using wires of negligible resistance. One has a resistance of 5 Ω, and the other has a resistance of 10 Ω. Several locations along the circuit are marked with letters, as shown in the figure. Which statements about this circuit are true? (There could be more than one correct choice.) 

(Multiple Choice)
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Four unequal resistors are connected in a parallel with each other. Which one of the following statements is correct about this combination?
(Multiple Choice)
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A 5-µF, a 7-µF, and an unknown capacitor CX are connected in series between points a and b. What do you know about the equivalent capacitance Cab between a and b? (There could be more than one correct choice.)
(Multiple Choice)
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A 1.0-µF capacitor and a 2.0-µF capacitor are connected together, and then that combination is connected across a 3.0-V potential source (a battery). What is the potential difference across the 2.0-µF capacitor if the capacitors are connected (a)in series or (b)in parallel?
(Short Answer)
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A 6.0-Ω and a 12-Ω resistor are connected in parallel across an ideal 36-V battery. What power is dissipated by the 6.0-Ω resistor?
(Multiple Choice)
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A system of four capacitors is connected across a 90-V voltage source as shown in the figure.
(a)What is the charge on the 4.0-µF capacitor?
(b)What is the charge on the 2.0-µF capacitor? 

(Short Answer)
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You have three capacitors with capacitances of 4.00 ?F, 7.00 ?F, and 9.00 ?F. What is the equivalent capacitance if they are connected (a)in series and (b)in parallel?
(Short Answer)
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When two or more different capacitors are connected in series across a potential source, which of the following statements must be true? (There could be more than one correct choice.)
(Multiple Choice)
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A resistor, an uncharged capacitor, a dc voltage source, and an open switch are all connected in series. The switch is closed at time t = 0 s. Which one of the following is a correct statement about this circuit?
(Multiple Choice)
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For the circuit shown in the figure, the ideal battery has an emf ? = 80 V. The four resistors have resistances of and Calculate the rate at which heat is being generated in the resistor R4.

(Short Answer)
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The network shown is assembled with uncharged capacitors X , Y, and Z, with and The switches S1 and S2 are initially open, and a potential difference Vab = 120 V is applied between points a and b. After the network is assembled, switch S1 is then closed, but switch S2 is kept open. What is the final potential difference across capacitor Z?

(Multiple Choice)
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For the circuit shown in the figure, V = 20 V, C = 10 µF, R = 0.80 MΩ, and the battery is ideal. Initially the switch S is open and the capacitor is uncharged. The switch is then closed at time t = 0.00 s. What is the potential difference across the resistor 20 s after closing the switch? 

(Multiple Choice)
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The resistors in the circuit shown in the figure each have a resistance of What is the equivalent resistance between points a and b of this combination?

(Multiple Choice)
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