Question 1

What is the magnitude of the potential difference between points B and C for the circuit shown in the figure? The battery is ideal, and all the numbers are accurate to two significant figures.

Accepted Answer

A)  6.0 V
B)  4.0 V
C)  3.0 V
D)  2.0 V

Question 2

Three resistors with resistances of 2.0 Ω, 6.0 Ω, and 12 Ω are connected across an ideal dc voltage source V = 2.0 V, as shown in the figure. What is the total current I in this circuit?

Accepted Answer

A)  0.70 A
B)  1.5 A
C)  2.0 A
D)  3.0 A
E)  6.0 A

Question 3

A 5.0-μF capacitor and a 7.0-μF capacitor are connected in series across an 8.0-V potential source. What is the potential difference across the 5.0-μF capacitor?

Accepted Answer

A)  0 V
B)  8.0 V
C)  2.7 V
D)  3.6 V
E)  4.7 V

Question 4

A 2.0-μF capacitor is charged to 12 V and then discharged through a 4.0-MΩ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

Accepted Answer

A)  8.0 s
B)  11 s
C)  22 s
D)  24 s

Question 5

In the circuit shown in the figure, R1 = 60 Ω, R2 = 120 Ω, R3 = 180 Ω, V1 = 3.0 V, V2 = 6.0 V, and the batteries are both ideal. What is the current through R1? 1 = 60 Ω, R2 = 120 Ω, R3 = 180 Ω, V1 = 3.0 V, V2 = 6.0 V, and the batteries are both ideal. What is the current through R1?   A) 0.050 A B) 0.030 A C) 0.00 A D) 2.68 A" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  0.050 A
B)  0.030 A
C)  0.00 A
D)  2.68 A

Question 6

When two or more different capacitors are connected in parallel across a potential source (battery) , which of the following statements must be true? (There could be more than one correct choice.)

Accepted Answer

A)  The potential difference across each capacitor is the same.
B)  Each capacitor carries the same amount of charge.
C)  The equivalent capacitance of the combination is less than the capacitance of any one of the capacitors.
D)  The capacitor with the largest capacitance has the largest potential difference across it.
E)  The capacitor with the largest capacitance has the most charge.

Question 7

A 4.0-µF capacitor and an 8.0-µF capacitor are connected together. What is the equivalent capacitance of the combination if they are connected (a)in series or (b)in parallel?

Accepted Answer

(a)2.7 µF ...

Question 8

Three capacitors of capacitance 5.00 ?F, 10.0 ?F, and 50.0 ?F are connected in series across a 12.0-V potential difference (a battery).
(a)How much charge is stored in the 5.00-?F capacitor?
(b)What is the potential difference across the 10.0-µF capacitor?

Accepted Answer

(a)37.5 µC...

Question 9

For the circuit shown in the figure, both batteries are ideal. What current flows in the solid wire connecting the upper left and lower left corners of the circuit?

Accepted Answer

A)  0.25 A
B)  0.50 A
C)  0.75 A
D)  1.0 A

Question 10

Four resistors having resistances of 20 Ω, 40 Ω, 60 Ω, and 80 Ω are connected in series across an ideal dc voltage source. If the current through this circuit is 0.50 A, what is the voltage of the voltage source?

Accepted Answer

A)  20 V
B)  40 V
C)  60 V
D)  80 V
E)  100 V

Question 11

A resistor with a resistance of 360 ? is in a series circuit with a capacitor of capacitance 7.3 × 10-6 F. What capacitance must be placed in parallel with the original capacitance to change the capacitive time constant of the combination to three times its original value?

Accepted Answer

Question 12

Four resistors are connected across an ideal dc source of V = 8.0 V, as shown in the figure. Assume all resistances shown are accurate to two significant figures. What is the current through the 9.0-Ω resistor?

Accepted Answer

A)  1.0 A
B)  0.67 A
C)  0.50 A
D)  0.90 A
E)  2.0 A

Question 13

Kirchhoff's loop rule is a statement of

Accepted Answer

A)  the law of conservation of momentum.
B)  the law of conservation of charge.
C)  the law of conservation of energy.
D)  the law of conservation of angular momentum.
E)  Newton's second law.

Question 14

Identical ideal batteries are connected in different arrangements to the same light bulb, as shown in the figure. For which arrangement will the bulb shine the brightest?

Accepted Answer

A)  A
B)  B
C)  C

Question 15

Two 4.0-Ω resistors are connected in parallel, and this combination is connected in series with 3.0 Ω. What is the equivalent resistance of this system?

Accepted Answer

A)  1.2 Ω
B)  5.0 Ω
C)  7.0 Ω
D)  11 Ω

Question 16

For the circuit shown in the figure, write the Kirchhoff current equation for the node labeled A. Notice the directions of the currents!

Accepted Answer

The answer of For the circuit shown in the figure,...

Question 17

Kirchhoff's junction rule is a statement of

Accepted Answer

A)  the law of conservation of momentum.
B)  the law of conservation of charge.
C)  the law of conservation of energy.
D)  the law of conservation of angular momentum.
E)  Newton's second law.

Question 18

A multiloop circuit is shown in the figure. Find the current I1 if the batteries are ideal. (It is not necessary to solve the entire circuit.)  1 if the batteries are ideal. (It is not necessary to solve the entire circuit.)    A) -2 A B) 2 A C) 6 A D) -5 A E) 0 A" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  -2 A
B)  2 A
C)  6 A
D)  -5 A
E)  0 A

Question 19

The network shown is assembled with uncharged capacitors X , Y, and Z, with  CX=4.0μF, C _ { X } = 4.0 \mu \mathrm { F } 	ext {, }CX​=4.0μF,    CY=3.0μF\mathrm { C } _ { \mathrm { Y } } = 3.0 \mu \mathrm { F }CY​=3.0μF  and  CZ=5.0μFC _ { Z } = 5.0 \mu \mathrm { F }CZ​=5.0μF  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. How much energy is finally stored in capacitor X? 1 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. How much energy is finally stored in capacitor X?   A) 29 mJ B) 0.48 mJ C) 0.24 mJ D) 58 mJ E) 0.96 mJ " class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)  29 mJ
B)  0.48 mJ
C)  0.24 mJ
D)  58 mJ
E)  0.96 mJ

Question 20

Four resistors are connected across an ideal dc battery with voltage V, as shown in the figure. If the total current in this circuit is I = 1 A, what is the value of the voltage V?

Accepted Answer

A)  2 V
B)  4 V
C)  6 V
D)  8 V
E)  10 V

Exam 23: Circuits

Four resistors are connected across an ideal dc battery with voltage V, as shown in the figure. If the total current in this circuit is I = 1 A, what is the value of the voltage V?

Correct Answer
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Two 4.0-Ω resistors are connected in parallel, and this combination is connected in series with 3.0 Ω. What is the equivalent resistance of this system?

Correct Answer
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A 5.0-μF capacitor and a 7.0-μF capacitor are connected in series across an 8.0-V potential source. What is the potential difference across the 5.0-μF capacitor?

Correct Answer
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What is the magnitude of the potential difference between points B and C for the circuit shown in the figure? The battery is ideal, and all the numbers are accurate to two significant figures.

Correct Answer
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Four resistors having resistances of 20 Ω, 40 Ω, 60 Ω, and 80 Ω are connected in series across an ideal dc voltage source. If the current through this circuit is 0.50 A, what is the voltage of the voltage source?

Correct Answer
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In the circuit shown in the figure, R₁ = 60 Ω, R₂ = 120 Ω, R₃ = 180 Ω, V₁ = 3.0 V, V₂ = 6.0 V, and the batteries are both ideal. What is the current through R₁?

Correct Answer
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Three capacitors of capacitance 5.00 ?F, 10.0 ?F, and 50.0 ?F are connected in series across a 12.0-V potential difference (a battery). (a)How much charge is stored in the 5.00-?F capacitor? (b)What is the potential difference across the 10.0-µF capacitor?

Correct Answer
verified
(a)37.5 µC...
View Answer

Four resistors are connected across an ideal dc source of V = 8.0 V, as shown in the figure. Assume all resistances shown are accurate to two significant figures. What is the current through the 9.0-Ω resistor?

Correct Answer
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Identical ideal batteries are connected in different arrangements to the same light bulb, as shown in the figure. For which arrangement will the bulb shine the brightest?

Correct Answer
verified

A multiloop circuit is shown in the figure. Find the current I₁ if the batteries are ideal. (It is not necessary to solve the entire circuit.)

Correct Answer
verified

Correct Answer
verified

When two or more different capacitors are connected in parallel across a potential source (battery) , which of the following statements must be true? (There could be more than one correct choice.)

Correct Answer
verified

For the circuit shown in the figure, both batteries are ideal. What current flows in the solid wire connecting the upper left and lower left corners of the circuit?

Correct Answer
verified

For the circuit shown in the figure, write the Kirchhoff current equation for the node labeled A. Notice the directions of the currents!

Correct Answer
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A 4.0-µF capacitor and an 8.0-µF capacitor are connected together. What is the equivalent capacitance of the combination if they are connected (a)in series or (b)in parallel?

Correct Answer
verified
(a)2.7 µF ...
View Answer

Kirchhoff's junction rule is a statement of

Correct Answer
verified

A resistor with a resistance of 360 ? is in a series circuit with a capacitor of capacitance 7.3 × 10^-6 F. What capacitance must be placed in parallel with the original capacitance to change the capacitive time constant of the combination to three times its original value?

Correct Answer
verified

Kirchhoff's loop rule is a statement of

Correct Answer
verified

Three resistors with resistances of 2.0 Ω, 6.0 Ω, and 12 Ω are connected across an ideal dc voltage source V = 2.0 V, as shown in the figure. What is the total current I in this circuit?

Correct Answer
verified

A 2.0-μF capacitor is charged to 12 V and then discharged through a 4.0-MΩ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

Correct Answer
verified

Exam 23: Circuits

Four resistors are connected across an ideal dc battery with voltage V, as shown in the figure. If the total current in this circuit is I = 1 A, what is the value of the voltage V?

Correct AnswerverifiedShow Answer

Two 4.0-Ω resistors are connected in parallel, and this combination is connected in series with 3.0 Ω. What is the equivalent resistance of this system?

Correct AnswerverifiedShow Answer

A 5.0-μF capacitor and a 7.0-μF capacitor are connected in series across an 8.0-V potential source. What is the potential difference across the 5.0-μF capacitor?

Correct AnswerverifiedShow Answer

What is the magnitude of the potential difference between points B and C for the circuit shown in the figure? The battery is ideal, and all the numbers are accurate to two significant figures.

Correct AnswerverifiedShow Answer

Four resistors having resistances of 20 Ω, 40 Ω, 60 Ω, and 80 Ω are connected in series across an ideal dc voltage source. If the current through this circuit is 0.50 A, what is the voltage of the voltage source?

Correct AnswerverifiedShow Answer

In the circuit shown in the figure, R1 = 60 Ω, R2 = 120 Ω, R3 = 180 Ω, V1 = 3.0 V, V2 = 6.0 V, and the batteries are both ideal. What is the current through R1?

Correct AnswerverifiedShow Answer

Three capacitors of capacitance 5.00 ?F, 10.0 ?F, and 50.0 ?F are connected in series across a 12.0-V potential difference (a battery). (a)How much charge is stored in the 5.00-?F capacitor? (b)What is the potential difference across the 10.0-µF capacitor?

Correct Answerverified(a)37.5 µC...View AnswerShow Answer

Four resistors are connected across an ideal dc source of V = 8.0 V, as shown in the figure. Assume all resistances shown are accurate to two significant figures. What is the current through the 9.0-Ω resistor?

Correct AnswerverifiedShow Answer

Identical ideal batteries are connected in different arrangements to the same light bulb, as shown in the figure. For which arrangement will the bulb shine the brightest?

Correct AnswerverifiedShow Answer

A multiloop circuit is shown in the figure. Find the current I1 if the batteries are ideal. (It is not necessary to solve the entire circuit.)

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

When two or more different capacitors are connected in parallel across a potential source (battery) , which of the following statements must be true? (There could be more than one correct choice.)

Correct AnswerverifiedShow Answer

For the circuit shown in the figure, both batteries are ideal. What current flows in the solid wire connecting the upper left and lower left corners of the circuit?

Correct AnswerverifiedShow Answer

For the circuit shown in the figure, write the Kirchhoff current equation for the node labeled A. Notice the directions of the currents!

Correct AnswerverifiedShow Answer

A 4.0-µF capacitor and an 8.0-µF capacitor are connected together. What is the equivalent capacitance of the combination if they are connected (a)in series or (b)in parallel?

Correct Answerverified(a)2.7 µF ...View AnswerShow Answer

Kirchhoff's junction rule is a statement of

Correct AnswerverifiedShow Answer

A resistor with a resistance of 360 ? is in a series circuit with a capacitor of capacitance 7.3 × 10-6 F. What capacitance must be placed in parallel with the original capacitance to change the capacitive time constant of the combination to three times its original value?

Correct AnswerverifiedShow Answer

Kirchhoff's loop rule is a statement of

Correct AnswerverifiedShow Answer

Three resistors with resistances of 2.0 Ω, 6.0 Ω, and 12 Ω are connected across an ideal dc voltage source V = 2.0 V, as shown in the figure. What is the total current I in this circuit?

Correct AnswerverifiedShow Answer

A 2.0-μF capacitor is charged to 12 V and then discharged through a 4.0-MΩ resistor. How long will it take for the voltage across the capacitor to drop to 3.0 V?

Correct AnswerverifiedShow Answer

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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In the circuit shown in the figure, R₁ = 60 Ω, R₂ = 120 Ω, R₃ = 180 Ω, V₁ = 3.0 V, V₂ = 6.0 V, and the batteries are both ideal. What is the current through R₁?

Correct Answer
verified

Correct Answer
verified
(a)37.5 µC...
View Answer

Correct Answer
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Correct Answer
verified

A multiloop circuit is shown in the figure. Find the current I₁ if the batteries are ideal. (It is not necessary to solve the entire circuit.)

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
verified
(a)2.7 µF ...
View Answer

Correct Answer
verified

A resistor with a resistance of 360 ? is in a series circuit with a capacitor of capacitance 7.3 × 10^-6 F. What capacitance must be placed in parallel with the original capacitance to change the capacitive time constant of the combination to three times its original value?

Correct Answer
verified

Correct Answer
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Correct Answer
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Correct Answer
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