Exam 21: Alternating-Current Circuits and Electromagnetic Waves

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Glass panes are opaque to a certain type of radiation,which passes through quartz.What type of radiation is it? This radiation is important in ozone layer reactions.

(Multiple Choice)

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Question 21

An AC series circuit contains a resistor of 10 Ω,a capacitor of 1.20 μF and an inductor of 110 mH.What frequency should be used to create a resonance condition in the circuit?

(Multiple Choice)

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Question 22

What is the phase angle of an AC series circuit that is constructed of a 13.9-Ω resistor along with 19.06 Ω inductive reactance and 5.41 Ω capacitive reactance?

(Multiple Choice)

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Question 23

An AC series circuit has 11.9 Ω resistance,15.57 Ω inductive reactance and 7.29 Ω capacitive reactance.If an effective (rms)emf of 103 V is applied,what is the effective (rms)current value?

(Multiple Choice)

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Question 24

Of the various types of electromagnetic radiation,which is the most penetrating through all forms of matter?

(Multiple Choice)

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Question 25

Temperature variation of different parts of a person's body can be detected by analyzing the emission pattern of which type of electromagnetic radiation?

(Multiple Choice)

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Question 26

A resistor and capacitor are connected in series with an applied AC voltage source.Separate voltmeter readings across the resistor and capacitor give values of 62 V and 93 V (rms),respectively.What is the effective (rms)voltage of the source?

(Multiple Choice)

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Question 27

When a 67-μF capacitor is attached to an AC source,its capacitive reactance is 97 Ω.If instead a 402-μF capacitor is attached to the same source,what will be its capacitive reactance?

(Multiple Choice)

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Question 28

In an AC circuit,the ratio of average current to maximum current is:

(Multiple Choice)

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Question 29

The current in an inductor connected to an AC voltage source lags the voltage.This lag is caused by the:

(Multiple Choice)

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Question 30

Determine the amount of energy carried in 1.1 m of a 4.2-mW He-Ne laser beam if the cross-sectional area of the beam is 2.6 × 10−⁶ m².

(Multiple Choice)

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Question 31

The Doppler shift for electromagnetic radiation from distant galaxies moving away from the observer is called a:

(Multiple Choice)

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Question 32

The electromagnetic radiation that causes tanning:

(Multiple Choice)

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Question 33

In an AC series circuit the capacitive reactance is 389 Ω and frequency is 65 Hz.What is the capacitance?

(Multiple Choice)

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Question 34

A radar pulse returns 2.1 × 10−⁴ seconds after it is sent out,having been reflected by an object.What is the distance between the radar antenna and the object? (c = 3.00 × 10⁸ m/s)

(Multiple Choice)

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Question 35

In a capacitor in an AC circuit,the voltage:

(Multiple Choice)

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Question 36

Which condition of motion must be met with regard to a charged particle if it is in the process of emitting electromagnetic radiation?

(Multiple Choice)

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Question 37

The peak voltage of an AC source is 126 V.What is the rms voltage?

(Multiple Choice)

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Question 38

A resistor,inductor,and capacitor are connected in series,each with effective (rms)voltage of 77 V,164 V,and 90 V,respectively.What is the value of the effective (rms)voltage of the applied source in the circuit?

(Multiple Choice)

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Question 39

A series RLC circuit has a inductive reactance of 2 Ω and a capacitive reactance of 1/2 Ω.By what factor should the AC frequency be changed to put this circuit into resonance?

(Multiple Choice)

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Question 40

Showing 21 - 40 of 98

Exam 21: Alternating-Current Circuits and Electromagnetic Waves

Glass panes are opaque to a certain type of radiation,which passes through quartz.What type of radiation is it? This radiation is important in ozone layer reactions.

An AC series circuit contains a resistor of 10 Ω,a capacitor of 1.20 μF and an inductor of 110 mH.What frequency should be used to create a resonance condition in the circuit?

What is the phase angle of an AC series circuit that is constructed of a 13.9-Ω resistor along with 19.06 Ω inductive reactance and 5.41 Ω capacitive reactance?

An AC series circuit has 11.9 Ω resistance,15.57 Ω inductive reactance and 7.29 Ω capacitive reactance.If an effective (rms)emf of 103 V is applied,what is the effective (rms)current value?

Of the various types of electromagnetic radiation,which is the most penetrating through all forms of matter?

Temperature variation of different parts of a person's body can be detected by analyzing the emission pattern of which type of electromagnetic radiation?

A resistor and capacitor are connected in series with an applied AC voltage source.Separate voltmeter readings across the resistor and capacitor give values of 62 V and 93 V (rms),respectively.What is the effective (rms)voltage of the source?

When a 67-μF capacitor is attached to an AC source,its capacitive reactance is 97 Ω.If instead a 402-μF capacitor is attached to the same source,what will be its capacitive reactance?

In an AC circuit,the ratio of average current to maximum current is:

The current in an inductor connected to an AC voltage source lags the voltage.This lag is caused by the:

Determine the amount of energy carried in 1.1 m of a 4.2-mW He-Ne laser beam if the cross-sectional area of the beam is 2.6 × 10−6 m2.

The Doppler shift for electromagnetic radiation from distant galaxies moving away from the observer is called a:

The electromagnetic radiation that causes tanning:

In an AC series circuit the capacitive reactance is 389 Ω and frequency is 65 Hz.What is the capacitance?

A radar pulse returns 2.1 × 10−4 seconds after it is sent out,having been reflected by an object.What is the distance between the radar antenna and the object? (c = 3.00 × 108 m/s)

In a capacitor in an AC circuit,the voltage:

Which condition of motion must be met with regard to a charged particle if it is in the process of emitting electromagnetic radiation?

The peak voltage of an AC source is 126 V.What is the rms voltage?

A resistor,inductor,and capacitor are connected in series,each with effective (rms)voltage of 77 V,164 V,and 90 V,respectively.What is the value of the effective (rms)voltage of the applied source in the circuit?

A series RLC circuit has a inductive reactance of 2 Ω and a capacitive reactance of 1/2 Ω.By what factor should the AC frequency be changed to put this circuit into resonance?

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

Determine the amount of energy carried in 1.1 m of a 4.2-mW He-Ne laser beam if the cross-sectional area of the beam is 2.6 × 10−⁶ m².

A radar pulse returns 2.1 × 10−⁴ seconds after it is sent out,having been reflected by an object.What is the distance between the radar antenna and the object? (c = 3.00 × 10⁸ m/s)