An ultraviolet light wave has a wavelength of 300 nm and speed of 2.69 × 108 m/s through a transparent medium.What is the frequency of this wave in the medium? (1 nm = 10−9 m and c = 3.00 × 108 m/s)

A) 1.00E+15 Hz B) 4.48E+14 Hz C) 8.97E+14 Hz D) 8.97E+5 Hz E) 2.41E+7 Hz A) 1.00E+15 Hz B) 4.48E+14 Hz C) 8.97E+14 Hz D) 8.97E+5 Hz E) 2.41E+7 Hz

If the radiant energy from the Sun comes in as a plane EM wave of intensity 1 340 W/m2,calculate the peak values of E and B.(µ0 = 4π × 10−7 T⋅m/A,c = 3.00×108 m/s)

A) 330 V/m,3.0 × 10−4 T B) 1 010 V/m,3.35 × 10−6 T C) 330 V/m,3.35 × 10−6 T D) 1 010 V/m,3.0 × 10−4 T A) 330 V/m,3.0 × 10−4 T B) 1 010 V/m,3.35 × 10−6 T C) 330 V/m,3.35 × 10−6 T D) 1 010 V/m,3.0 × 10−4 T

Exam 21: Alternating-Current Circuits and Electromagnetic Waves

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A transformer is to be designed to increase the 41-kV (rms)output of a generator to the transmission line voltage of 388 kV (rms).If the primary winding has 98 turns,how many turns must the secondary have?

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A radio wave signal,which transmits at a frequency of 5.77 MHz,has what wavelength? (c = 3.00 × 10⁸ m/s)

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A 16.8-μF capacitor is connected to an AC source with an rms voltage of 155 V and a frequency of 85.0 Hz.What is the rms current in the capacitor?

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A resistor,inductor,and capacitor are connected in series,each with an effective (rms)voltage of 54 V,183 V,and 79 V,respectively.What is the magnitude of the phase angle in this circuit?

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Question 4

What is the maximum value of the electric field E at 0.9 m from a 55-W light bulb radiating in all directions? (µ₀ = 4π × 10−⁷ T⋅m/A,c = 3.00 × 10⁸ m/s)

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Question 5

In an RLC series circuit the phase angle between the current and voltages is 30°.If the AC frequency doubles,what is the resulting phase angle?

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Question 6

In the Doppler effect for electromagnetic waves,which of the following gives the greatest shift in frequency?

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Question 7

A radio wave transmits 2.99 W/m² average power per unit area.What is the peak value of the associated magnetic field? (μ₀ = 4π × 10−⁷ T⋅m/A and c = 3.00 × 10⁸ m/s)

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Question 8

The primary winding of an electric train transformer has 235 turns,and the secondary has 72.If the input voltage is 191 V(rms),what is the output voltage?

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Question 9

Microwave radiation is useful in which of the following?

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Question 10

In the inductor of a 74-Hz AC series circuit,the peak voltage precedes the peak current in each cycle by what time interval?

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Question 11

The power dissipated in an AC series circuit increases as the phase angle approaches what value?

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Question 12

An ultraviolet light wave has a wavelength of 300 nm and speed of 2.69 × 10⁸ m/s through a transparent medium.What is the frequency of this wave in the medium? (1 nm = 10−⁹ m and c = 3.00 × 10⁸ m/s)

(Multiple Choice)

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Question 13

If the radiant energy from the Sun comes in as a plane EM wave of intensity 1 340 W/m²,calculate the peak values of E and B.(µ₀ = 4π × 10−⁷ T⋅m/A,c = 3.00×10⁸ m/s)

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Question 14

Which of the following combinations of circuit components can be used to make a tuner for a radio,to select the desired frequency?

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Question 15

An ideal transformer is one that:

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Question 16

An AC voltage source,with a peak output of 309 V,is connected to a 80.0-Ω resistor.What is the effective (or rms)current in the circuit?

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Question 17

An AC voltage source,with a peak output of 164 V,results in dissipation of energy in a resistor at rate of 139 W.What is the value of the resistance?

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Question 18

An AC voltage source,with a peak output of 206 V,is connected to a 74.0-Ω resistor.What is the rate of energy dissipated due to heat in the resistor?

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Question 19

Peak values for a neodymium-glass laser are 600 J for 1.0 nanosecond.If the cross-section of the laser beam is 1.64 cm²,what are the maximum values of E and B? (µ₀ = 4π × 10−⁷ T⋅m/A,c = 3.00 × 10⁸ m/s)

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Question 20

Showing 1 - 20 of 98

Exam 21: Alternating-Current Circuits and Electromagnetic Waves

A transformer is to be designed to increase the 41-kV (rms)output of a generator to the transmission line voltage of 388 kV (rms).If the primary winding has 98 turns,how many turns must the secondary have?

A radio wave signal,which transmits at a frequency of 5.77 MHz,has what wavelength? (c = 3.00 × 108 m/s)

A 16.8-μF capacitor is connected to an AC source with an rms voltage of 155 V and a frequency of 85.0 Hz.What is the rms current in the capacitor?

A resistor,inductor,and capacitor are connected in series,each with an effective (rms)voltage of 54 V,183 V,and 79 V,respectively.What is the magnitude of the phase angle in this circuit?

What is the maximum value of the electric field E at 0.9 m from a 55-W light bulb radiating in all directions? (µ0 = 4π × 10−7 T⋅m/A,c = 3.00 × 108 m/s)

In an RLC series circuit the phase angle between the current and voltages is 30°.If the AC frequency doubles,what is the resulting phase angle?

In the Doppler effect for electromagnetic waves,which of the following gives the greatest shift in frequency?

A radio wave transmits 2.99 W/m2 average power per unit area.What is the peak value of the associated magnetic field? (μ0 = 4π × 10−7 T⋅m/A and c = 3.00 × 108 m/s)

The primary winding of an electric train transformer has 235 turns,and the secondary has 72.If the input voltage is 191 V(rms),what is the output voltage?

Microwave radiation is useful in which of the following?

In the inductor of a 74-Hz AC series circuit,the peak voltage precedes the peak current in each cycle by what time interval?

The power dissipated in an AC series circuit increases as the phase angle approaches what value?

An ultraviolet light wave has a wavelength of 300 nm and speed of 2.69 × 108 m/s through a transparent medium.What is the frequency of this wave in the medium? (1 nm = 10−9 m and c = 3.00 × 108 m/s)

If the radiant energy from the Sun comes in as a plane EM wave of intensity 1 340 W/m2,calculate the peak values of E and B.(µ0 = 4π × 10−7 T⋅m/A,c = 3.00×108 m/s)

Which of the following combinations of circuit components can be used to make a tuner for a radio,to select the desired frequency?

An ideal transformer is one that:

An AC voltage source,with a peak output of 309 V,is connected to a 80.0-Ω resistor.What is the effective (or rms)current in the circuit?

An AC voltage source,with a peak output of 164 V,results in dissipation of energy in a resistor at rate of 139 W.What is the value of the resistance?

An AC voltage source,with a peak output of 206 V,is connected to a 74.0-Ω resistor.What is the rate of energy dissipated due to heat in the resistor?

Peak values for a neodymium-glass laser are 600 J for 1.0 nanosecond.If the cross-section of the laser beam is 1.64 cm2,what are the maximum values of E and B? (µ0 = 4π × 10−7 T⋅m/A,c = 3.00 × 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

A radio wave signal,which transmits at a frequency of 5.77 MHz,has what wavelength? (c = 3.00 × 10⁸ m/s)

What is the maximum value of the electric field E at 0.9 m from a 55-W light bulb radiating in all directions? (µ₀ = 4π × 10−⁷ T⋅m/A,c = 3.00 × 10⁸ m/s)

A radio wave transmits 2.99 W/m² average power per unit area.What is the peak value of the associated magnetic field? (μ₀ = 4π × 10−⁷ T⋅m/A and c = 3.00 × 10⁸ m/s)

An ultraviolet light wave has a wavelength of 300 nm and speed of 2.69 × 10⁸ m/s through a transparent medium.What is the frequency of this wave in the medium? (1 nm = 10−⁹ m and c = 3.00 × 10⁸ m/s)

If the radiant energy from the Sun comes in as a plane EM wave of intensity 1 340 W/m²,calculate the peak values of E and B.(µ₀ = 4π × 10−⁷ T⋅m/A,c = 3.00×10⁸ m/s)

Peak values for a neodymium-glass laser are 600 J for 1.0 nanosecond.If the cross-section of the laser beam is 1.64 cm²,what are the maximum values of E and B? (µ₀ = 4π × 10−⁷ T⋅m/A,c = 3.00 × 10⁸ m/s)