Question 1

A light bulb is connected in the circuit shown in the figure with the switch S open and the capacitor uncharged. The battery has no appreciable internal resistance. Which one of the following graphs best describes the brightness B of the bulb as a function of time t after closing the switch?

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) All of the above
G) A) and E)

Question 2

For the circuit shown in the figure, all quantities are accurate to 2 significant figures. What is the value of the current I1? 1?   A)  0.32 A B)  0.11 A C)  0.29 A D)  0.61 A E)  0.89 A" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   0.32 A
B)   0.11 A
C)   0.29 A
D)   0.61 A
E)   0.89 AF) B) and E)
G) A) and B)

Question 3

For the circuit shown in the figure, the switch S is initially open and the capacitor voltage is 80 V. The switch is then closed at time t = 0. How long after closing the switch will the current in the resistor be 7.0 µA?

Accepted Answer

A)   87 s
B)   95 s
C)   78 s
D)   69 s
E)   61 sF) C) and E)
G) B) and C)

Question 4

A galvanometer G has an internal resistance rg. An AMMETER is constructed by incorporating the galvanometer and an additional resistance Rs. Which one of the figures below is the most appropriate circuit diagram for the ammeter? g. An AMMETER is constructed by incorporating the galvanometer and an additional resistance Rs. Which one of the figures below is the most appropriate circuit diagram for the ammeter?   A)  1 B)  2 C)  3 D)  4 E)  5" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) B) and C)
G) B) and D)

Question 5

For the circuit shown in the figure, the switch S is initially open and the capacitor is uncharged. The switch is then closed at time t = 0. How many seconds after closing the switch will the energy stored in the capacitor be equal to 50.2 mJ?

Accepted Answer

A)   81 s
B)   65 s
C)   97 s
D)   110 s
E)   130 sF) B) and D)
G) C) and D)

Question 6

A galvanometer G has an internal resistance rg. A VOLTMETER is constructed by incorporating the galvanometer and an additional resistance Rs. Which one of the figures below is the most appropriate circuit diagram for the voltmeter? g. A VOLTMETER is constructed by incorporating the galvanometer and an additional resistance Rs. Which one of the figures below is the most appropriate circuit diagram for the voltmeter?   A)  1 B)  2 C)  3 D)  4 E)  5" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   1
B)   2
C)   3
D)   4
E)   5F) A) and D)
G) A) and B)

Question 7

Two identical resistors of resistance R = 24 Ω and a variable resistor Rx are connected to an ideal battery of voltage V as shown in the figure. What should be the value of the variable resistance Rx to make the voltage across the two parallel resistors equal to x are connected to an ideal battery of voltage V as shown in the figure. What should be the value of the variable resistance Rx to make the voltage across the two parallel resistors equal to   .   A)  4.0 Ω B)  24 Ω C)  8.0 Ω D)  16 Ω E)  40 Ω" class="answers-bank-image d-inline" rel="preload" > . x are connected to an ideal battery of voltage V as shown in the figure. What should be the value of the variable resistance Rx to make the voltage across the two parallel resistors equal to   .   A)  4.0 Ω B)  24 Ω C)  8.0 Ω D)  16 Ω E)  40 Ω" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   4.0 Ω
B)   24 Ω
C)   8.0 Ω
D)   16 Ω
E)   40 ΩF) C) and D)
G) B) and E)

Question 8

A 4.0-μF capacitor that is initially uncharged is connected in series with a 4.0-kΩ resistor and an ideal 17.0-V battery. How much energy is stored in the capacitor 17 ms after the battery has been connected?

Accepted Answer

A)   250,000 nJ
B)   15,000 kJ
C)   25 µJ
D)   890 nJE) A) and D)
F) B) and C)

Question 9

A certain electric furnace consumes 24 kW when it is connected to a 240-V line. What is the resistance of the furnace?

Accepted Answer

A)   1.0 kΩ
B)   10 Ω
C)   2.4 Ω
D)   0.42 Ω
E)   100 ΩF) A) and E)
G) A) and D)

Question 10

A 4.0-mF capacitor is discharged through a 4.0-kΩ resistor. How long will it take for the capacitor to lose half its initial stored energy?

Accepted Answer

A)   9.2 s
B)   2.7 s
C)   10.2 s
D)   5.5 s
E)   1.6 sF) A) and B)
G) D) and E)

Question 11

An uncharged 1.0-μF capacitor is connected in series with a  resistor, an ideal  battery, and an open switch. What is the voltage across the capacitor  after closing the switch?

Accepted Answer

A)   2.7 V
B)   1.6 V
C)   2.6 V
D)   0.62 VE) None of the above
F) A) and C)

Question 12

Three resistors are connected across an ideal 2.0-V DC battery as shown in the figure.
(a) At what rate does the battery supply energy to the resistors?
(b) At what rate is heat produced in the 6.0-Ω resistor?

Accepted Answer

(a) 3.0 W ...

Question 13

A 5.0-Ω resistor and a 9.0-Ω resistor are connected in parallel. A 4.0-Ω resistor is then connected in series with this parallel combination. An ideal 6.0-V battery is then connected across the series-parallel combination of the three resistors. What is the current through
(a) the 4.0-Ω resistor?
(b) the 5.0-Ω resistor?
(c) the 9.0-Ω resistor?

Accepted Answer

(a) 0.83 A...

Question 14

In the figure a current of 6.0 A is drawn from the battery. What is the terminal voltage Vab of the battery? ab of the battery?   A)  0.00 V B)  +12 V C)  +24 V D)  -12 V E)  -24 V" class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   0.00 V
B)   +12 V
C)   +24 V
D)   -12 V
E)   -24 VF) C) and D)
G) A) and E)

Question 15

A galvanometer coil having a resistance of 20 Ω and a full-scale deflection at 1.0 mA is connected in series with a 4980 Ω resistance to build a voltmeter. What is the maximum voltage that this voltmeter can read?

Accepted Answer

A)   3.0 V
B)   1.0 V
C)   50 V
D)   5.0 V
E)   10 VF) B) and C)
G) C) and E)

Question 16

The figure shows three identical lightbulbs connected to a battery having a constant voltage across its terminals. What happens to the brightness of lightbulb 1 when the switch S is closed?

Accepted Answer

A)   The brightness will increase momentarily then return to its previous level.
B)   The brightness increases permanently.
C)   The brightness will decrease momentarily then return to its previous level.
D)   The brightness remains the same as before the switch is closed.
E)   The brightness decreases permanently.F) None of the above
G) A) and D)

Question 17

As more resistors are added in parallel across a constant voltage source, the power supplied by the source

Accepted Answer

A)   increases.
B)   decreases.
C)   does not change.D) None of the above
E) A) and B)

Question 18

Consider the circuit shown in the figure. Note that two currents are shown. Calculate the emfs ε1 and ε3.

Accepted Answer

Question 19

For the circuit shown in the figure, all quantities are accurate to 3 significant figures. What is the power dissipated in the 2-Ω resistor?

Accepted Answer

A)   5.33 W
B)   8.0 W
C)   6.67 W
D)   2.67 W
E)   3.56 WF) A) and C)
G) A) and E)

Question 20

In the circuit shown in the figure, an ideal ohmmeter is connected across ab with the switch S open. All the connecting leads have negligible resistance. The reading of the ohmmeter will be closest to

Accepted Answer

A)   7.5 Ω.
B)   10 Ω.
C)   30 Ω.
D)   40 Ω.
E)   60 Ω.F) B) and C)
G) A) and E)

Exam 28: Fundamentals of Circuits

A galvanometer G has an internal resistance r_g. A VOLTMETER is constructed by incorporating the galvanometer and an additional resistance R_s. Which one of the figures below is the most appropriate circuit diagram for the voltmeter?

Correct Answer
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As more resistors are added in parallel across a constant voltage source, the power supplied by the source

Correct Answer
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For the circuit shown in the figure, all quantities are accurate to 2 significant figures. What is the value of the current I₁?

Correct Answer
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Two identical resistors of resistance R = 24 Ω and a variable resistor R_x are connected to an ideal battery of voltage V as shown in the figure. What should be the value of the variable resistance R_x to make the voltage across the two parallel resistors equal to .

Correct Answer
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A galvanometer G has an internal resistance r_g. An AMMETER is constructed by incorporating the galvanometer and an additional resistance R_s. Which one of the figures below is the most appropriate circuit diagram for the ammeter?

Correct Answer
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A certain electric furnace consumes 24 kW when it is connected to a 240-V line. What is the resistance of the furnace?

Correct Answer
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Correct Answer
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(a) 0.83 A...
View Answer

A 4.0-mF capacitor is discharged through a 4.0-kΩ resistor. How long will it take for the capacitor to lose half its initial stored energy?

Correct Answer
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In the circuit shown in the figure, an ideal ohmmeter is connected across ab with the switch S open. All the connecting leads have negligible resistance. The reading of the ohmmeter will be closest to

Correct Answer
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An uncharged 1.0-μF capacitor is connected in series with a resistor, an ideal battery, and an open switch. What is the voltage across the capacitor after closing the switch?

Correct Answer
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The figure shows three identical lightbulbs connected to a battery having a constant voltage across its terminals. What happens to the brightness of lightbulb 1 when the switch S is closed?

Correct Answer
verified

A light bulb is connected in the circuit shown in the figure with the switch S open and the capacitor uncharged. The battery has no appreciable internal resistance. Which one of the following graphs best describes the brightness B of the bulb as a function of time t after closing the switch?

Correct Answer
verified

Consider the circuit shown in the figure. Note that two currents are shown. Calculate the emfs ε₁ and ε₃.

Correct Answer
verified

For the circuit shown in the figure, the switch S is initially open and the capacitor voltage is 80 V. The switch is then closed at time t = 0. How long after closing the switch will the current in the resistor be 7.0 µA?

Correct Answer
verified

In the figure a current of 6.0 A is drawn from the battery. What is the terminal voltage V_ab of the battery?

Correct Answer
verified

A 4.0-μF capacitor that is initially uncharged is connected in series with a 4.0-kΩ resistor and an ideal 17.0-V battery. How much energy is stored in the capacitor 17 ms after the battery has been connected?

Correct Answer
verified

A galvanometer coil having a resistance of 20 Ω and a full-scale deflection at 1.0 mA is connected in series with a 4980 Ω resistance to build a voltmeter. What is the maximum voltage that this voltmeter can read?

Correct Answer
verified

Three resistors are connected across an ideal 2.0-V DC battery as shown in the figure. (a) At what rate does the battery supply energy to the resistors? (b) At what rate is heat produced in the 6.0-Ω resistor?

Correct Answer
verified
(a) 3.0 W ...
View Answer

For the circuit shown in the figure, the switch S is initially open and the capacitor is uncharged. The switch is then closed at time t = 0. How many seconds after closing the switch will the energy stored in the capacitor be equal to 50.2 mJ?

Correct Answer
verified

For the circuit shown in the figure, all quantities are accurate to 3 significant figures. What is the power dissipated in the 2-Ω resistor?

Correct Answer
verified

Exam 28: Fundamentals of Circuits

A galvanometer G has an internal resistance rg. A VOLTMETER is constructed by incorporating the galvanometer and an additional resistance Rs. Which one of the figures below is the most appropriate circuit diagram for the voltmeter?

Correct AnswerverifiedShow Answer

As more resistors are added in parallel across a constant voltage source, the power supplied by the source

Correct AnswerverifiedShow Answer

For the circuit shown in the figure, all quantities are accurate to 2 significant figures. What is the value of the current I1?

Correct AnswerverifiedShow Answer

Two identical resistors of resistance R = 24 Ω and a variable resistor Rx are connected to an ideal battery of voltage V as shown in the figure. What should be the value of the variable resistance Rx to make the voltage across the two parallel resistors equal to .

Correct AnswerverifiedShow Answer

A galvanometer G has an internal resistance rg. An AMMETER is constructed by incorporating the galvanometer and an additional resistance Rs. Which one of the figures below is the most appropriate circuit diagram for the ammeter?

Correct AnswerverifiedShow Answer

A certain electric furnace consumes 24 kW when it is connected to a 240-V line. What is the resistance of the furnace?

Correct AnswerverifiedShow Answer

Correct Answerverified(a) 0.83 A...View AnswerShow Answer

A 4.0-mF capacitor is discharged through a 4.0-kΩ resistor. How long will it take for the capacitor to lose half its initial stored energy?

Correct AnswerverifiedShow Answer

In the circuit shown in the figure, an ideal ohmmeter is connected across ab with the switch S open. All the connecting leads have negligible resistance. The reading of the ohmmeter will be closest to

Correct AnswerverifiedShow Answer

An uncharged 1.0-μF capacitor is connected in series with a resistor, an ideal battery, and an open switch. What is the voltage across the capacitor after closing the switch?

Correct AnswerverifiedShow Answer

The figure shows three identical lightbulbs connected to a battery having a constant voltage across its terminals. What happens to the brightness of lightbulb 1 when the switch S is closed?

Correct AnswerverifiedShow Answer

A light bulb is connected in the circuit shown in the figure with the switch S open and the capacitor uncharged. The battery has no appreciable internal resistance. Which one of the following graphs best describes the brightness B of the bulb as a function of time t after closing the switch?

Correct AnswerverifiedShow Answer

Consider the circuit shown in the figure. Note that two currents are shown. Calculate the emfs ε1 and ε3.

Correct AnswerverifiedShow Answer

For the circuit shown in the figure, the switch S is initially open and the capacitor voltage is 80 V. The switch is then closed at time t = 0. How long after closing the switch will the current in the resistor be 7.0 µA?

Correct AnswerverifiedShow Answer

In the figure a current of 6.0 A is drawn from the battery. What is the terminal voltage Vab of the battery?

Correct AnswerverifiedShow Answer

A 4.0-μF capacitor that is initially uncharged is connected in series with a 4.0-kΩ resistor and an ideal 17.0-V battery. How much energy is stored in the capacitor 17 ms after the battery has been connected?

Correct AnswerverifiedShow Answer

A galvanometer coil having a resistance of 20 Ω and a full-scale deflection at 1.0 mA is connected in series with a 4980 Ω resistance to build a voltmeter. What is the maximum voltage that this voltmeter can read?

Correct AnswerverifiedShow Answer

Three resistors are connected across an ideal 2.0-V DC battery as shown in the figure. (a) At what rate does the battery supply energy to the resistors? (b) At what rate is heat produced in the 6.0-Ω resistor?

Correct Answerverified(a) 3.0 W ...View AnswerShow Answer

For the circuit shown in the figure, the switch S is initially open and the capacitor is uncharged. The switch is then closed at time t = 0. How many seconds after closing the switch will the energy stored in the capacitor be equal to 50.2 mJ?

Correct AnswerverifiedShow Answer

For the circuit shown in the figure, all quantities are accurate to 3 significant figures. What is the power dissipated in the 2-Ω resistor?

Correct AnswerverifiedShow Answer

A galvanometer G has an internal resistance r_g. A VOLTMETER is constructed by incorporating the galvanometer and an additional resistance R_s. Which one of the figures below is the most appropriate circuit diagram for the voltmeter?

Correct Answer
verified

Correct Answer
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For the circuit shown in the figure, all quantities are accurate to 2 significant figures. What is the value of the current I₁?

Correct Answer
verified

Two identical resistors of resistance R = 24 Ω and a variable resistor R_x are connected to an ideal battery of voltage V as shown in the figure. What should be the value of the variable resistance R_x to make the voltage across the two parallel resistors equal to .

Correct Answer
verified

A galvanometer G has an internal resistance r_g. An AMMETER is constructed by incorporating the galvanometer and an additional resistance R_s. Which one of the figures below is the most appropriate circuit diagram for the ammeter?

Correct Answer
verified

Correct Answer
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Correct Answer
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(a) 0.83 A...
View 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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Consider the circuit shown in the figure. Note that two currents are shown. Calculate the emfs ε₁ and ε₃.

Correct Answer
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Correct Answer
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In the figure a current of 6.0 A is drawn from the battery. What is the terminal voltage V_ab of the battery?

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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(a) 3.0 W ...
View Answer

Correct Answer
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Correct Answer
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