The characteristics of five wires are given in the table. The gauge is a measure of the diameter of the wire; and #18 corresponds to a diameter of 1.2 × 10S1U1P1-S1S1P0S1U1P13S1S1P0 m; and #22 corresponds to a diameter of 6.4 × 10S1U1P1-S1S1P0S1U1P14S1S1P0 m. The resistivity of iron is 9.7 × 10S1U1P1-S1S1P0S1U1P18S1S1P0 $\varOmega$. m; and the value for copper is 1.72 × 10S1U1P1-S1S1P0S1U1P18S1S1P0 $\varOmega$. m. -Which one of the five wires has the largest resistance?

A) wire A B) wire B C) wire C D) wire D E) wire E A) wire A B) wire B C) wire C D) wire D E) wire E

The figure shows a circuit. The switch S can be closed on either point A or C, but not both at the same time. Use the following quantities: VS1U1B11S1U1B0 = VS1U1B12S1U1B0 = 12 V RS1U1B11S1U1B0 = RS1U1B14S1U1B0 = 1.0 $\varOmega$ RS1U1B12S1U1B0 = RS1U1B13S1U1B0 = 2.0 $\varOmega$ -At what rate is energy dissipated by R1 when the switch S is closed on A?

A) 1 W B) 4 W C) 9 W D) 36 W E) 144 W A) 1 W B) 4 W C) 9 W D) 36 W E) 144 W

Exam 20: Electric Circuits

An RC circuit consists of a resistor with resistance 1.0 k $\varOmega$ , a 120-V battery, and two capacitors, C1 and C2, with capacitances of 20.0 µF and 60.0 µF, respectively. Initially, the capacitors are uncharged; and the switch is closed at t = 0 s. -How much charge will be stored in each capacitor after a long time has elapsed? $An RC circuit consists of a resistor with resistance 1.0 k \varOmega , a 120-V battery, and two capacitors, C1 and C2, with capacitances of 20.0 µF and 60.0 µF, respectively. Initially, the capacitors are uncharged; and the switch is closed at t = 0 s. -How much charge will be stored in each capacitor after a long time has elapsed?$

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Question 1

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Three resistors are placed in a circuit as shown. The potential difference between points A and B is 30 V. -What is the equivalent resistance between the points A and B?

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Question 2

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Which one of the following combinations of units is equivalent to the ohm?

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Question 3

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Three resistors are placed in a circuit as shown. The potential difference between points A and B is 30 V. $Three resistors are placed in a circuit as shown. The potential difference between points A and B is 30 V. -What is the current through the 30- \varOmega resistor?$ -What is the current through the 30- $\varOmega$ resistor?

(Multiple Choice)

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Question 4

Some light bulbs are connected in parallel to a 120 V source as shown in the figure. Each bulb dissipates an average power of 60 W. The circuit has a fuse F that burns out when the current in the circuit exceeds 9 A. Determine the largest number of bulbs, which can be used in this circuit without burning out the fuse.

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Question 5

Four resistors and a 6-V battery are arranged as shown in the circuit diagram. -The smallest current passes through which resistor(s)?

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Question 6

Five resistors are connected as shown in the diagram. The potential difference between points A and B is 25 V. $Five resistors are connected as shown in the diagram. The potential difference between points A and B is 25 V. -What is the potential drop across the 3.5- \varOmega resistor?$ -What is the potential drop across the 3.5- $\varOmega$ resistor?

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Question 7

A 3.0-A current is maintained in a simple circuit that consists of a resistor between the terminals of an ideal battery. If the battery supplies energy at a rate of 25 W, how large is the resistance?

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Question 8

A lamp uses an average power of 55 W when it is connected to an rms voltage of 120 V. Which entry in the following table is correct for this circuit?

(Multiple Choice)

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Question 9

A 4-A current is maintained in a simple circuit with a total resistance of 2 $\varOmega$ . How much energy is delivered in forty five seconds?

(Multiple Choice)

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Question 10

The characteristics of five wires are given in the table. $The characteristics of five wires are given in the table. The gauge is a measure of the diameter of the wire; and #18 corresponds to a diameter of 1.2 × 10-3 m; and #22 corresponds to a diameter of 6.4 × 10-4 m. The resistivity of iron is 9.7 × 10-8 \varOmega . m; and the value for copper is 1.72 × 10-8 \varOmega . m. -Which one of the five wires has the largest resistance?$ The gauge is a measure of the diameter of the wire; and #18 corresponds to a diameter of 1.2 × 10^-³ m; and #22 corresponds to a diameter of 6.4 × 10^-⁴ m. The resistivity of iron is 9.7 × 10^-⁸ $\varOmega$ . m; and the value for copper is 1.72 × 10^-⁸ $\varOmega$ . m. -Which one of the five wires has the largest resistance?

(Multiple Choice)

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Question 11

Four resistors and a 6-V battery are arranged as shown in the circuit diagram. -The largest potential difference is across which resistor(s)?

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Question 12

Five resistors are connected as shown in the diagram. The potential difference between points A and B is 25 V. $Five resistors are connected as shown in the diagram. The potential difference between points A and B is 25 V. -What is the current through the 1.8- \varOmega resistor?$ -What is the current through the 1.8- $\varOmega$ resistor?

(Multiple Choice)

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Question 13

Which one of the following statements concerning resistance is true?

(Multiple Choice)

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Question 14

Determine the power dissipated by the 40- $\varOmega$ resistor in the circuit shown. $Determine the power dissipated by the 40- \varOmega resistor in the circuit shown.$

(Multiple Choice)

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Question 15

The figure shows a circuit. The switch S can be closed on either point A or C, but not both at the same time. Use the following quantities: V₁ = V₂ = 12 V R₁ = R₄ = 1.0 $\varOmega$ R₂ = R₃ = 2.0 $\varOmega$ $The figure shows a circuit. The switch S can be closed on either point A or C, but not both at the same time. Use the following quantities: V1 = V2 = 12 V R1 = R4 = 1.0 \varOmega R2 = R3 = 2.0 \varOmega -At what rate is energy dissipated by R1 when the switch S is closed on A?$ -At what rate is energy dissipated by R₁ when the switch S is closed on A?

(Multiple Choice)

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Question 16

Three resistors are placed in a circuit as shown. The potential difference between points A and B is 30 V. $Three resistors are placed in a circuit as shown. The potential difference between points A and B is 30 V. -What is the potential drop across the 10- \varOmega resistor?$ -What is the potential drop across the 10- $\varOmega$ resistor?

(Multiple Choice)

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Question 17

The figure shows a simple RC circuit consisting of a 10.0-µF capacitor in series with a resistor. Initially, the switch is open as suggested in the figure. The capacitor has been charged so that the potential difference between its plates is 100.0 V. At t = 0 s, the switch is closed. The capacitor discharges exponentially so that 2.0 s after the switch is closed, the potential difference between the capacitor plates is 37 V. In other words, in 2.0 s the potential difference between the capacitor plates is reduced to 37 % of its original value. -Determine the potential drop across the resistor R at t = 2.0 s (i.e., two seconds after the switch is closed).

(Multiple Choice)

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Question 18

Complete the following statement: The unit kilowatt . hour measures

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Question 19

Complete the following statement: A simple series circuit contains a resistance R and an ideal battery. If a second resistor is connected in parallel with R,

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Question 20

Showing 1 - 20 of 100

Exam 20: Electric Circuits

Three resistors are placed in a circuit as shown. The potential difference between points A and B is 30 V. -What is the equivalent resistance between the points A and B?

Which one of the following combinations of units is equivalent to the ohm?

Three resistors are placed in a circuit as shown. The potential difference between points A and B is 30 V. -What is the current through the 30- Ω\varOmegaΩ resistor?

Four resistors and a 6-V battery are arranged as shown in the circuit diagram. -The smallest current passes through which resistor(s)?

Five resistors are connected as shown in the diagram. The potential difference between points A and B is 25 V. -What is the potential drop across the 3.5- Ω\varOmegaΩ resistor?

A 3.0-A current is maintained in a simple circuit that consists of a resistor between the terminals of an ideal battery. If the battery supplies energy at a rate of 25 W, how large is the resistance?

A lamp uses an average power of 55 W when it is connected to an rms voltage of 120 V. Which entry in the following table is correct for this circuit?

A 4-A current is maintained in a simple circuit with a total resistance of 2 Ω\varOmegaΩ . How much energy is delivered in forty five seconds?

Four resistors and a 6-V battery are arranged as shown in the circuit diagram. -The largest potential difference is across which resistor(s)?

Five resistors are connected as shown in the diagram. The potential difference between points A and B is 25 V. -What is the current through the 1.8- Ω\varOmegaΩ resistor?

Which one of the following statements concerning resistance is true?

Determine the power dissipated by the 40- Ω\varOmegaΩ resistor in the circuit shown.

The figure shows a circuit. The switch S can be closed on either point A or C, but not both at the same time. Use the following quantities: V1 = V2 = 12 V R1 = R4 = 1.0 Ω\varOmegaΩ R2 = R3 = 2.0 Ω\varOmegaΩ -At what rate is energy dissipated by R1 when the switch S is closed on A?

Three resistors are placed in a circuit as shown. The potential difference between points A and B is 30 V. -What is the potential drop across the 10- Ω\varOmegaΩ resistor?

Complete the following statement: The unit kilowatt . hour measures

Complete the following statement: A simple series circuit contains a resistance R and an ideal battery. If a second resistor is connected in parallel with R,

Introduction and Mathematical Concepts

Kinematics in One Dimension

Kinematics in Two Dimensions

Forces and Newtons Laws of Motion

Dynamics of Uniform Circular Motion

Work and Energy

Impulse and Momentum

Rotational Kinematics

Rotational Dynamics

Simple Harmonic Motion and Elasticity

Fluids

Temperature and Heat

The Transfer of Heat

The Ideal Gas Law and Kinetic Theory

Thermodynamics

Waves and Sound

The Principle of Linear Superposition and Interference Phenomena

Electric Forces and Electric Fields

Electric Potential Energy and the Electric Potential

Magnetic Forces and Magnetic Fields

Electromagnetic Induction

Alternating Current Circuits

Electromagnetic Waves

The Refl Ection of Light: Mirrors

The Refraction of Light: Lenses and Optical Instruments

Interference and the Wave Nature of Light

Special Relativity

Particles and Waves

The Nature of the Atom

Nuclear Physics and Radioactivity

Ionizing Radiation, Nuclear Energy, and Elementary Particles

Filters

A 4-A current is maintained in a simple circuit with a total resistance of 2 $\varOmega$ . How much energy is delivered in forty five seconds?

Determine the power dissipated by the 40- $\varOmega$ resistor in the circuit shown. $Determine the power dissipated by the 40- \varOmega resistor in the circuit shown.$