An electromagnetic wave with a peak magnetic field component of 1.68 × 10−7 T has an associated peak electric field component of what value? (μ0 = 4π × 10−7 T⋅m/A,ε0 = 8.85 × 10−12 C2/N⋅m2 and c = 3.00 × 108 m/s)

A) 1.98E-2 N/C B) 5.60E-9 N/C C) 50.4 N/C D) 1.79E+8 N/C E) 6.33E-6 N/C A) 1.98E-2 N/C B) 5.60E-9 N/C C) 50.4 N/C D) 1.79E+8 N/C E) 6.33E-6 N/C

Find the frequency of x-rays of wavelength 2.68 × 10−10 m.(c = 3 × 108 m/s)

A) 1.12E+12 Hz B) 2.24E+19 Hz C) 1.12E+18 Hz D) 2.24E+9 Hz E) 2.80E+14 Hz A) 1.12E+12 Hz B) 2.24E+19 Hz C) 1.12E+18 Hz D) 2.24E+9 Hz E) 2.80E+14 Hz

Exam 21: Alternating-Current Circuits and Electromagnetic Waves

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What is the impedance of an AC series circuit that is constructed of a 12.60-Ω resistor along with 18.97 Ω inductive reactance and 6.89 Ω capacitive reactance?

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Question 61

A resistor,inductor and capacitor are connected in series,each with effective (rms)voltage of 69 V,184 V and 58 V,respectively.If the resistor is rated at 31 Ω,what is the average power dissipated in the circuit?

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Question 62

An electromagnetic wave with a peak magnetic field component of 1.68 × 10−⁷ T has an associated peak electric field component of what value? (μ₀ = 4π × 10−⁷ T⋅m/A,ε₀ = 8.85 × 10−¹² C²/N⋅m² and c = 3.00 × 10⁸ m/s)

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Question 63

Resonance occurs in an AC series circuit when which of the following conditions is met?

(Multiple Choice)

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Question 64

Consider an AC series circuit containing a coil,capacitor and resistance.Tripling the frequency will change the circuit's impedance by what factor?

(Multiple Choice)

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Question 65

A solar cell has a light-gathering area of 12 cm² and produces 0.33 A at 0.67 V (dc)when illuminated with sunlight of intensity 858 W/m².What is the efficiency of the solar cell?

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Question 66

Maxwell developed his theory of electromagnetism by combining previous discoveries.He added his own original hypothesis that:

(Multiple Choice)

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Question 67

The power factor in an AC series circuit is equal to which of the following ratios?

(Multiple Choice)

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Question 68

In an RLC circuit,the maximum current is 1 amp.What is the average current?

(Multiple Choice)

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Question 69

Find the frequency of x-rays of wavelength 2.68 × 10−¹⁰ m.(c = 3 × 10⁸ m/s)

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Question 70

A series RLC AC circuit is at resonance.It contains a resistor of 23 Ω,a capacitor of 0.25 μF and an inductor of 119 mH.If an effective (rms)voltage of 177 V is applied,what is the effective (rms)current when the circuit is in resonance?

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Question 71

Find the resonant frequency for a series RLC circuit where R = 21 Ω,C = 8.4 µF,and L = 2.80 mH.

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Question 72

A series RLC circuit in a radio is in resonance with AM 500 kHz.If the radio station is changed to AM 1500 kHz,by what factor must the capacitance be multiplied to again achieve resonance?

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Question 73

Which one of the following scientists made the theoretical prediction that electromagnetic waves travel through a vacuum at the speed of light?

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Question 74

In an RLC series circuit,if the AC frequency is decreased to a very small value,what value does the phase angle between the current and voltage approach?

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Question 75

An AC series circuit contains a resistor of 16 Ω,an inductor of 43 mH and a variable capacitor.If the frequency of the applied voltage is 310 Hz,to what setting should the capacitor be set if resonance is achieved?

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Question 76

In order to keep its food hot,a restaurant will place it under which type of lamp?

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Question 77

The Earth is 1.49 × 10¹¹ m from the Sun.If the solar radiation at the top of the Earth's atmosphere is 1 340 W/m²,what is the total power output of the Sun?

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Question 78

Consider an AC series circuit containing a coil,capacitor and resistance.Quadrupling the frequency will change the inductive reactance by what factor?

(Multiple Choice)

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Question 79

What is the wavelength of 111.9-MHz television EM waves? (c = 3 × 10⁸ m/s)

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Question 80

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Exam 21: Alternating-Current Circuits and Electromagnetic Waves

What is the impedance of an AC series circuit that is constructed of a 12.60-Ω resistor along with 18.97 Ω inductive reactance and 6.89 Ω capacitive reactance?

A resistor,inductor and capacitor are connected in series,each with effective (rms)voltage of 69 V,184 V and 58 V,respectively.If the resistor is rated at 31 Ω,what is the average power dissipated in the circuit?

An electromagnetic wave with a peak magnetic field component of 1.68 × 10−7 T has an associated peak electric field component of what value? (μ0 = 4π × 10−7 T⋅m/A,ε0 = 8.85 × 10−12 C2/N⋅m2 and c = 3.00 × 108 m/s)

Resonance occurs in an AC series circuit when which of the following conditions is met?

Consider an AC series circuit containing a coil,capacitor and resistance.Tripling the frequency will change the circuit's impedance by what factor?

A solar cell has a light-gathering area of 12 cm2 and produces 0.33 A at 0.67 V (dc)when illuminated with sunlight of intensity 858 W/m2.What is the efficiency of the solar cell?

Maxwell developed his theory of electromagnetism by combining previous discoveries.He added his own original hypothesis that:

The power factor in an AC series circuit is equal to which of the following ratios?

In an RLC circuit,the maximum current is 1 amp.What is the average current?

Find the frequency of x-rays of wavelength 2.68 × 10−10 m.(c = 3 × 108 m/s)

A series RLC AC circuit is at resonance.It contains a resistor of 23 Ω,a capacitor of 0.25 μF and an inductor of 119 mH.If an effective (rms)voltage of 177 V is applied,what is the effective (rms)current when the circuit is in resonance?

Find the resonant frequency for a series RLC circuit where R = 21 Ω,C = 8.4 µF,and L = 2.80 mH.

A series RLC circuit in a radio is in resonance with AM 500 kHz.If the radio station is changed to AM 1500 kHz,by what factor must the capacitance be multiplied to again achieve resonance?

Which one of the following scientists made the theoretical prediction that electromagnetic waves travel through a vacuum at the speed of light?

In an RLC series circuit,if the AC frequency is decreased to a very small value,what value does the phase angle between the current and voltage approach?

An AC series circuit contains a resistor of 16 Ω,an inductor of 43 mH and a variable capacitor.If the frequency of the applied voltage is 310 Hz,to what setting should the capacitor be set if resonance is achieved?

In order to keep its food hot,a restaurant will place it under which type of lamp?

The Earth is 1.49 × 1011 m from the Sun.If the solar radiation at the top of the Earth's atmosphere is 1 340 W/m2,what is the total power output of the Sun?

Consider an AC series circuit containing a coil,capacitor and resistance.Quadrupling the frequency will change the inductive reactance by what factor?

What is the wavelength of 111.9-MHz television EM waves? (c = 3 × 108 m/s)

Introduction

Introduction: Part A

Motion in One Dimension

Motion in One Dimension: Part A

Vectors and Two-Dimensional Motion

Vectors and Two-Dimensional Motion: Part A

The Laws of Motion

The Laws of Motion: Part A

Energy

Energy: Part A

Momentum and Collisions

Momentum and Collisions: Part A

Rotational Motion and the Law of Gravity

Rotational Motion and the Law of Gravity: Part A

Rotational Equilibrium and Rotational Dynamics

Rotational Equilibrium and Rotational Dynamics: Part A

Solids and Fluids

Solids and Fluids: Part A

Thermal Physics

Thermal Physics: Part A

Energy in Thermal Processes Heat and Internal Energy

Energy in Thermal Processes Heat and Internal Energy: Part A

The Laws of Thermodynamics Work in Thermodynamic Processes

The Laws of Thermodynamics Work in Thermodynamic Processes: Part A

Vibrations and Waves

Vibrations and Waves: Part A

Sound

Sound: Part A

Electric Forces and Electric Fields

Electric Forces and Electric Fields: Part A

Electrical Energy and Capacitance

Electrical Energy and Capacitance: Part A

Current and Resistance Electric Current

Current and Resistance Electric Current: Part A

Direct-Current Circuits Sources of EMF

Direct-Current Circuits Sources of EMF: Part A

Magnetism Magnets

Magnetism Magnets: Part A

Induced Voltages and Inductance

Induced Voltages and Inductance: Part A

Alternating-Current Circuits and Electromagnetic Waves: Part A

Reflection and Refraction of Light

Reflection and Refraction of Light: Part A

Mirrors and Lenses

Mirrors and Lenses: Part A

Wave Optics

Wave Optics: Part A

Optical Instruments

Optical Instruments: Part A

Relativity

Relativity: Part A

Quantum Physics Blackbody Radiation and Plancks Hypothesis

Quantum Physics Blackbody Radiation and Plancks Hypothesis: Part A

Atomic Physics

Atomic Physics: Part A

Nuclear Physics

Nuclear Physics: Part A

Nuclear Energy and Elementary Particles

Nuclear Energy and Elementary Particles: Part A

An electromagnetic wave with a peak magnetic field component of 1.68 × 10−⁷ T has an associated peak electric field component of what value? (μ₀ = 4π × 10−⁷ T⋅m/A,ε₀ = 8.85 × 10−¹² C²/N⋅m² and c = 3.00 × 10⁸ m/s)

A solar cell has a light-gathering area of 12 cm² and produces 0.33 A at 0.67 V (dc)when illuminated with sunlight of intensity 858 W/m².What is the efficiency of the solar cell?

Find the frequency of x-rays of wavelength 2.68 × 10−¹⁰ m.(c = 3 × 10⁸ m/s)

The Earth is 1.49 × 10¹¹ m from the Sun.If the solar radiation at the top of the Earth's atmosphere is 1 340 W/m²,what is the total power output of the Sun?

What is the wavelength of 111.9-MHz television EM waves? (c = 3 × 10⁸ m/s)