The resistivity of a silver wire with a radius of 5.04 × 10-4 m is 1.59 × 10-8 $\varOmega$. m. If the length of the wire is 3.00 m, what is the resistance of the wire?

A) 0.0598 $\varOmega$ B) 47.0 µ$\varOmega$ C) 9.46 µ$\varOmega$ D) 0.167 $\varOmega$ E) 1.88 $\varOmega$ A) 0.0598 $\varOmega$ B) 47.0 µ$\varOmega$ C) 9.46 µ$\varOmega$ D) 0.167 $\varOmega$ E) 1.88 $\varOmega$

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: VS1U1B11S1U1B0 = VS1U1B12S1U1B0 = 12 V RS1U1B11S1U1B0 = RS1U1B14S1U1B0 = 1.0 $\varOmega$ RS1U1B12S1U1B0 = RS1U1B13S1U1B0 = 2.0 $\varOmega$ -Determine the current through R4 when the switch S is closed on C.

A) zero amperes B) 2 A C) 3 A D) 6 A E) 24 A A) zero amperes B) 2 A C) 3 A D) 6 A E) 24 A

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. -Of the five wires, which one has the smallest 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

Exam 20: Electric Circuits

A 10.0-µF capacitor is charged so that the potential difference between its plates is 10.0 V. A 5.0-µF capacitor is similarly charged so that the potential difference between its plates is 5.0 V. The two charged capacitors are then connected to each other in parallel with positive plate connected to positive plate and negative plate connected to negative plate. -What is the final potential difference across the plates of the capacitors when they are connected in parallel?

(Multiple Choice)

4.7/5

(95)

Question 61

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 numerical value of the resistance R.

(Multiple Choice)

4.9/5

(64)

Question 62

Five resistors are connected as shown in the diagram. The potential difference between points A and B is 15 V. $Five resistors are connected as shown in the diagram. The potential difference between points A and B is 15 V. -What amount of energy is dissipated in the 2.7- \varOmega resistor in 9.0 seconds?$ -What amount of energy is dissipated in the 2.7- $\varOmega$ resistor in 9.0 seconds?

(Multiple Choice)

4.9/5

(79)

Question 63

The resistivity of a silver wire with a radius of 5.04 × 10^-⁴ m is 1.59 × 10^-⁸ $\varOmega$ . m. If the length of the wire is 3.00 m, what is the resistance of the wire?

(Multiple Choice)

4.9/5

(82)

Question 64

Three resistors and two 10.0-V batteries are arranged as shown in the circuit diagram. Which one of the following entries in the table is correct?

(Multiple Choice)

4.9/5

(74)

Question 65

A 10.0-µF capacitor is charged so that the potential difference between its plates is 10.0 V. A 5.0-µF capacitor is similarly charged so that the potential difference between its plates is 5.0 V. The two charged capacitors are then connected to each other in parallel with positive plate connected to positive plate and negative plate connected to negative plate. -How much charge flows from one capacitor to the other when the capacitors are connected?

(Multiple Choice)

4.8/5

(79)

Question 66

Which one of the following quantities can be converted to kilowatt . hours (kWh)?

(Multiple Choice)

4.8/5

(78)

Question 67

A resistor dissipates 1.5 W when it is connected to a battery with a potential difference of 12 V. What is the resistance of the resistor?

(Multiple Choice)

4.7/5

(93)

Question 68

Five resistors are connected as shown in the diagram. The potential difference between points A and B is 25 V. -What is the equivalent resistance between the points A and B?

(Multiple Choice)

4.9/5

(83)

Question 69

Three resistors are connected as shown in the figure. The potential difference between points A and B is 26 V. -What is the equivalent resistance between the points A and B?

(Multiple Choice)

4.9/5

(83)

Question 70

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

(Multiple Choice)

4.8/5

(71)

Question 71

Jason's circuit has a 24- $\varOmega$ resistor that is connected in series to two 12- $\varOmega$ resistors that are connected in parallel. JoAnna's circuit has three identical resistors wired in parallel. If the equivalent resistance of Jason's circuit is the same as that of JoAnna's circuit, determine the value of JoAnna's resistors.

(Multiple Choice)

4.9/5

(80)

Question 72

When a 1500-W hair dryer is in use, the current passing through the dryer may be represented as I = (17.7A) sin (120 $\pi$ t). What is the rms current for this circuit?

(Multiple Choice)

4.8/5

(68)

Question 73

Which one of the following statements concerning superconductors is false?

(Multiple Choice)

4.9/5

(78)

Question 74

Three resistors are connected as shown in the figure. The potential difference between points A and B is 26 V. $Three resistors are connected as shown in the figure. The potential difference between points A and B is 26 V. -How much current flows through the 2- \varOmega resistor?$ -How much current flows through the 2- $\varOmega$ resistor?

(Multiple Choice)

4.9/5

(85)

Question 75

A battery supplies a total charge of 5.0 $\mu$ C to a circuit that consists of a series combination of two identical capacitors, each with capacitance C. Determine the charge on either capacitor.

(Multiple Choice)

4.8/5

(76)

Question 76

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

(Multiple Choice)

4.9/5

(81)

Question 77

A 220- $\varOmega$ resistor is connected across an ac voltage source V = (150 V) sin [2 $\pi$ (60 Hz)t]. What is the average power delivered to this circuit?

(Multiple Choice)

4.8/5

(79)

Question 78

Four resistors and a 6-V battery are arranged as shown in the circuit diagram. -Determine the equivalent resistance for this circuit.

(Multiple Choice)

4.7/5

(71)

Question 79

The figure shows variation of the current through the heating element with time in an iron when it is plugged into a standard 120 V, 60 Hz outlet. -What is the approximate average power dissipated in the iron?

(Multiple Choice)

4.8/5

(86)

Question 80

Showing 61 - 80 of 100

Exam 20: Electric Circuits

Five resistors are connected as shown in the diagram. The potential difference between points A and B is 15 V. -What amount of energy is dissipated in the 2.7- Ω\varOmegaΩ resistor in 9.0 seconds?

The resistivity of a silver wire with a radius of 5.04 × 10-4 m is 1.59 × 10-8 Ω\varOmegaΩ . m. If the length of the wire is 3.00 m, what is the resistance of the wire?

Three resistors and two 10.0-V batteries are arranged as shown in the circuit diagram. Which one of the following entries in the table is correct?

Which one of the following quantities can be converted to kilowatt . hours (kWh)?

A resistor dissipates 1.5 W when it is connected to a battery with a potential difference of 12 V. What is the resistance of the resistor?

Five resistors are connected as shown in the diagram. The potential difference between points A and B is 25 V. -What is the equivalent resistance between the points A and B?

Three resistors are connected as shown in the figure. The potential difference between points A and B is 26 V. -What is the equivalent resistance between the points A and B?

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 -Determine the current through R4 when the switch S is closed on C.

When a 1500-W hair dryer is in use, the current passing through the dryer may be represented as I = (17.7A) sin (120 π\piπ t). What is the rms current for this circuit?

Which one of the following statements concerning superconductors is false?

Three resistors are connected as shown in the figure. The potential difference between points A and B is 26 V. -How much current flows through the 2- Ω\varOmegaΩ resistor?

A battery supplies a total charge of 5.0 μ\muμ C to a circuit that consists of a series combination of two identical capacitors, each with capacitance C. Determine the charge on either capacitor.

A 220- Ω\varOmegaΩ resistor is connected across an ac voltage source V = (150 V) sin [2 π\piπ (60 Hz)t]. What is the average power delivered to this circuit?

Four resistors and a 6-V battery are arranged as shown in the circuit diagram. -Determine the equivalent resistance for this circuit.

The figure shows variation of the current through the heating element with time in an iron when it is plugged into a standard 120 V, 60 Hz outlet. -What is the approximate average power dissipated in the iron?

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

The resistivity of a silver wire with a radius of 5.04 × 10^-⁴ m is 1.59 × 10^-⁸ $\varOmega$ . m. If the length of the wire is 3.00 m, what is the resistance of the wire?

When a 1500-W hair dryer is in use, the current passing through the dryer may be represented as I = (17.7A) sin (120 $\pi$ t). What is the rms current for this circuit?

A battery supplies a total charge of 5.0 $\mu$ C to a circuit that consists of a series combination of two identical capacitors, each with capacitance C. Determine the charge on either capacitor.

A 220- $\varOmega$ resistor is connected across an ac voltage source V = (150 V) sin [2 $\pi$ (60 Hz)t]. What is the average power delivered to this circuit?