Question 1

A charged capacitor is connected in series with a resistor and an open switch. At time t = 0 s, the switch is closed. Which of the graphs below best describes the potential difference V across the capacitor as a function of time t?

Accepted Answer

A)  
 
B) 
 
C)  
 
D)  
 
E)

Question 2

For the circuit shown in the figure, R₁ = 50 Ω, R₂ = 20 Ω, R₃ = 35 Ω, R₄ = 10 Ω, R₅ = 68 Ω, I₁= 0.111 A, I₂ = 0.142 A, and the batteries are ideal. (a) Determine V₁ and V₂. (b) What is the potential difference across R₄?

Accepted Answer

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

Question 3

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?

Accepted Answer

A)  120 V 
B)  82 V 
C)  75 V 
D)  67 V 
E)  60 V

Question 4

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 5

Five 2.0-Ω resistors are connected as shown in the figure. What is the equivalent resistance of this combination between points a and b?

Accepted Answer

A)  1.0 Ω 
B)  10.0 Ω 
C)  2.0 Ω 
D)  6.0 Ω 
E)  0.40 Ω

Question 6

Determine the current in the 12-Ω resistor for the circuit shown in the figure assuming that the batteries are ideal.

Accepted Answer

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

Question 7

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 8

When different resistors are connected in parallel across an ideal battery, we can be certain that

Accepted Answer

A)  the same current flows in each one. 
B)  the potential difference across each is the same. 
C)  the power dissipated in each is the same. 
D)  their equivalent resistance is greater than the resistance of any one of the individual resistances. 
E)  their equivalent resistance is equal to the average of the individual resistances.

Question 9

Two resistors having resistances of 5.0 Ω and 9.0 Ω are connected in parallel. A 4.0-Ω resistor is then connected in series with the parallel combination. An ideal 6.0-V battery is then connected across the series-parallel combination. What is the current through the 9.0-Ω resistor?

Accepted Answer

A)  0.35 A 
B)  0.53 A 
C)  0.83 A 
D)  0.30 A 
E)  0.67 A

Question 10

What current flows from the battery in the circuit shown in the figure? The battery is ideal, and all the numbers are accurate to two significant figures.

Accepted Answer

A)  0.35 A 
B)  2.0 A 
C)  2.5 A 
D)  3.0 A

Question 11

A 9-V battery is hooked up to two resistors in series. 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. Through which resistor is energy being dissipated at the higher rate?

Accepted Answer

A)  the 10-Ω resistor 
B)  the 5-Ω resistor 
C)  Energy is being dissipated by both resistors at the same rate.

Question 12

When unequal resistors are connected in series across an ideal battery,

Accepted Answer

A)  the same power is dissipated in each one. 
B)  the potential difference across each is the same. 
C)  the current flowing in each is the same. 
D)  the equivalent resistance of the circuit is less than that of the smallest resistor. 
E)  the equivalent resistance of the circuit is equal to the average of all the resistances.

Question 13

Draw a circuit consisting of a battery connected to two resistors, R1 and R2, in series with each other and a capacitor C connected across the resistors.

Accepted Answer

A) 
 
B) 
 
C) 
 
D)

Question 14

An ideal 10.0-V dc is connected across a $590.0 - \Omega $ resistor in series with an $840.0 - \Omega$ resistor. What is the potential drop across the $590.0 \Omega$ resistor?

Accepted Answer

A)  4.1 V 
B)  5.9 V 
C)  14 V 
D)  7.0 V

Question 15

The following three appliances are connected in parallel across an ideal 120-V dc power source: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they draw from the source?

Accepted Answer

A)  4.0 A 
B)  5.0 A 
C)  10 A 
D)  20 A

Question 16

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?

Accepted Answer

A)  1.6 V 
B)  2.0 V 
C)  2.3 V 
D)  2.6 V 
E)  3.0 V

Question 17

If emf of the ideal battery is V = 4.0 V, what is the current through R6 for the circuit shown in the figure?

Accepted Answer

A)  0.0077 A 
B)  0.017 A 
C)  0.040 A 
D)  4.0 A

Question 18

A system of four capacitors is connected across a 90-V voltage source as shown in the figure. What is the equivalent capacitance of this system?

Accepted Answer

A)  1.5 μF 
B)  15 μF 
C)  3.6 μF 
D)  3.3 μF

Question 19

For the circuit shown in the figure, the current in the 8.0-Ω resistor is 0.50A. What is the current in the 2.0-Ω resistor? All the numbers shown are accurate to two significant figures.

Accepted Answer

A)  2.25 A 
B)  0.75 A 
C)  4.5 A 
D)  9.5 A 
E)  6.4 A

Question 20

An uncharged capacitor is connected in series with a resistor, a dc battery, and an open switch. At time t = 0 s, the switch is closed. Which of the graphs below best describes the potential difference V across the resistor as a function of time t?

Accepted Answer

A)  
 
B) 
 
C)  
 
D) 
 
E)

Exam 23: Circuits

A charged capacitor is connected in series with a resistor and an open switch. At time t = 0 s, the switch is closed. Which of the graphs below best describes the potential difference V across the capacitor as a function of time t?

For the circuit shown in the figure, R₁ = 50 Ω, R₂ = 20 Ω, R₃ = 35 Ω, R₄ = 10 Ω, R₅ = 68 Ω, I₁= 0.111 A, I₂ = 0.142 A, and the batteries are ideal. (a) Determine V₁ and V₂. (b) What is the potential difference across R₄?

Kirchhoff's loop rule is a statement of

Five 2.0-Ω resistors are connected as shown in the figure. What is the equivalent resistance of this combination between points a and b?

Determine the current in the 12-Ω resistor for the circuit shown in the figure assuming that the batteries are ideal.

Kirchhoff's junction rule is a statement of

When different resistors are connected in parallel across an ideal battery, we can be certain that

Two resistors having resistances of 5.0 Ω and 9.0 Ω are connected in parallel. A 4.0-Ω resistor is then connected in series with the parallel combination. An ideal 6.0-V battery is then connected across the series-parallel combination. What is the current through the 9.0-Ω resistor?

What current flows from the battery in the circuit shown in the figure? The battery is ideal, and all the numbers are accurate to two significant figures.

A 9-V battery is hooked up to two resistors in series. 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. Through which resistor is energy being dissipated at the higher rate?

When unequal resistors are connected in series across an ideal battery,

Draw a circuit consisting of a battery connected to two resistors, R₁ and R₂, in series with each other and a capacitor C connected across the resistors.

An ideal 10.0-V dc is connected across a $590.0 - \Omega$ resistor in series with an $840.0 - \Omega$ resistor. What is the potential drop across the $590.0 \Omega$ resistor?

The following three appliances are connected in parallel across an ideal 120-V dc power source: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they draw from the source?

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?

If emf of the ideal battery is V = 4.0 V, what is the current through R₆ for the circuit shown in the figure?

A system of four capacitors is connected across a 90-V voltage source as shown in the figure. What is the equivalent capacitance of this system?

For the circuit shown in the figure, the current in the 8.0-Ω resistor is 0.50A. What is the current in the 2.0-Ω resistor? All the numbers shown are accurate to two significant figures.

An uncharged capacitor is connected in series with a resistor, a dc battery, and an open switch. At time t = 0 s, the switch is closed. Which of the graphs below best describes the potential difference V across the resistor as a function of time t?

Exam 23: Circuits

A charged capacitor is connected in series with a resistor and an open switch. At time t = 0 s, the switch is closed. Which of the graphs below best describes the potential difference V across the capacitor as a function of time t?

For the circuit shown in the figure, R1 = 50 Ω, R2 = 20 Ω, R3 = 35 Ω, R4 = 10 Ω, R5 = 68 Ω, I1 = 0.111 A, I2 = 0.142 A, and the batteries are ideal. (a) Determine V1 and V2. (b) What is the potential difference across R4?

Kirchhoff's loop rule is a statement of

Five 2.0-Ω resistors are connected as shown in the figure. What is the equivalent resistance of this combination between points a and b?

Determine the current in the 12-Ω resistor for the circuit shown in the figure assuming that the batteries are ideal.

Kirchhoff's junction rule is a statement of

When different resistors are connected in parallel across an ideal battery, we can be certain that

Two resistors having resistances of 5.0 Ω and 9.0 Ω are connected in parallel. A 4.0-Ω resistor is then connected in series with the parallel combination. An ideal 6.0-V battery is then connected across the series-parallel combination. What is the current through the 9.0-Ω resistor?

What current flows from the battery in the circuit shown in the figure? The battery is ideal, and all the numbers are accurate to two significant figures.

A 9-V battery is hooked up to two resistors in series. 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. Through which resistor is energy being dissipated at the higher rate?

When unequal resistors are connected in series across an ideal battery,

Draw a circuit consisting of a battery connected to two resistors, R1 and R2, in series with each other and a capacitor C connected across the resistors.

An ideal 10.0-V dc is connected across a 590.0−Ω590.0 - \Omega 590.0−Ω resistor in series with an 840.0−Ω840.0 - \Omega840.0−Ω resistor. What is the potential drop across the 590.0Ω590.0 \Omega590.0Ω resistor?

The following three appliances are connected in parallel across an ideal 120-V dc power source: 1200-W toaster, 650-W coffee pot, and 600-W microwave. If all were operated at the same time what total current would they draw from the source?

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?

If emf of the ideal battery is V = 4.0 V, what is the current through R6 for the circuit shown in the figure?

A system of four capacitors is connected across a 90-V voltage source as shown in the figure. What is the equivalent capacitance of this system?

For the circuit shown in the figure, the current in the 8.0-Ω resistor is 0.50A. What is the current in the 2.0-Ω resistor? All the numbers shown are accurate to two significant figures.

An uncharged capacitor is connected in series with a resistor, a dc battery, and an open switch. At time t = 0 s, the switch is closed. Which of the graphs below best describes the potential difference V across the resistor as a function of time t?

For the circuit shown in the figure, R₁ = 50 Ω, R₂ = 20 Ω, R₃ = 35 Ω, R₄ = 10 Ω, R₅ = 68 Ω, I₁= 0.111 A, I₂ = 0.142 A, and the batteries are ideal. (a) Determine V₁ and V₂. (b) What is the potential difference across R₄?

Draw a circuit consisting of a battery connected to two resistors, R₁ and R₂, in series with each other and a capacitor C connected across the resistors.

An ideal 10.0-V dc is connected across a $590.0 - \Omega$ resistor in series with an $840.0 - \Omega$ resistor. What is the potential drop across the $590.0 \Omega$ resistor?

If emf of the ideal battery is V = 4.0 V, what is the current through R₆ for the circuit shown in the figure?