An electromagnetic wave with a peak magnetic field component of 1.59 × 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) 2.10E-2 N/C B) 5.30E-9 N/C C) 4.77E+1 N/C D) 1.89E+8 N/C E) 5.99E-6 N/C A) 2.10E-2 N/C B) 5.30E-9 N/C C) 4.77E+1 N/C D) 1.89E+8 N/C E) 5.99E-6 N/C

An electromagnetic wave with a peak electric field component of 1.11 × 102 N/C has what associated peak magnetic field value? (ε0 = 8.85 × 10−12 C2/N⋅m2,μ0 = 4π × 10−7 T⋅m/A and c = 3.00 × 108 m/s)

A) 3.33E+10 T B) 2.70E+6 T C) 3.70E-7 T D) 4.65E-13 T E) 7.34E+3 T A) 3.33E+10 T B) 2.70E+6 T C) 3.70E-7 T D) 4.65E-13 T E) 7.34E+3 T

Exam 21: Alternating-Current Circuits and Electromagnetic Waves

A transformer consists of a 780-turn primary coil and a 1 403-turn secondary coil.If the current in the secondary is 3.49 A,what is the primary current?

(Multiple Choice)

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Question 101

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

(Multiple Choice)

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Question 102

A series RLC circuit has an inductive reactance of 5 Ω and a capacitive reactance of 1/5 Ω.By what factor should the AC frequency be changed to put this circuit into resonance?

(Multiple Choice)

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Question 103

A 13.7-μF capacitor is connected to an AC source with an rms voltage of 148 V and a frequency of 40.0 Hz.What is the rms current in the capacitor?

(Multiple Choice)

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Question 104

The primary winding of an electric train transformer has 445 turns,and the secondary has 300.If the input voltage is 118 V(rms),what is the output voltage?

(Multiple Choice)

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Question 105

What is the impedance of an AC series circuit that is constructed of a 10.0-Ω resistor along with 24.0-Ω inductive reactance and 7.0-Ω capacitive reactance?

(Multiple Choice)

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Question 106

An AC power generator produces 27 A (rms)at 4730 V.The energy is transmitted through a long-distance power line,which has a total resistance of 173 Ω.What percentage of the power delivered by the generator is dissipated as heat in the long-distance line if a step-up transformer is not used?

(Multiple Choice)

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Question 107

An electromagnetic wave with a peak magnetic field component of 1.59 × 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)

(Multiple Choice)

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Question 108

Determine the amount of energy carried in 2.0 m of a 4.6-mW He-Ne laser beam if the cross-sectional area of the beam is 4.1 × 10−⁶ m².

(Multiple Choice)

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Question 109

How is the direction of propagation of an electromagnetic wave oriented relative to the associated And Fields?

(Multiple Choice)

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Question 110

A radio wave signal,which transmits at a frequency of 5.64 MHz,has what wavelength? (c = 3.00 × 10⁸ m/s)

(Multiple Choice)

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Question 111

A solar cell has a light-gathering area of 12.4 cm² and produces 0.49 A at 0.93 V (dc)when illuminated with sunlight of intensity 884 W/m².What is the efficiency of the solar cell?

(Multiple Choice)

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Question 112

When an RLC series circuit is in resonance,its impedance is:

(Multiple Choice)

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Question 113

An electromagnetic wave with a peak electric field component of 1.11 × 10² N/C has what associated peak magnetic field value? (ε₀ = 8.85 × 10−¹² C²/N⋅m²,μ₀ = 4π × 10−⁷ T⋅m/A and c = 3.00 × 10⁸ m/s)

(Multiple Choice)

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Question 114

A transformer is to be designed to increase the 27-kV (rms)output of a generator to the transmission line voltage of 346 kV (rms).If the primary winding has 95 turns,how many turns must the secondary have?

(Multiple Choice)

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Question 115

The human eye is sensitive to light with wavelength down to 710 nm.What is the frequency of radiation at this wavelength? (1 nm = 10−⁹ m and c = 3.00 × 10⁸ m/s)

(Multiple Choice)

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Question 116

A 6.0-J pulse of light from a laser has what momentum?

(Multiple Choice)

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Question 117

An engineer designed a transformer to convert 120 V (rms) to 6.0 V (rms). The number of turns in the primary is 540, and the secondary current is 610 mA at an output voltage of 6.0 V (rms). -What is the current in the primary?

(Multiple Choice)

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Question 118

An AC voltage source,with a peak output of 114 V,is connected to a 40.0-Ω resistor.What is the effective (or rms)current in the circuit?

(Multiple Choice)

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Question 119

Which type of electromagnetic wave has the largest wavelength?

(Multiple Choice)

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Question 120

Showing 101 - 120 of 122

Exam 21: Alternating-Current Circuits and Electromagnetic Waves

A transformer consists of a 780-turn primary coil and a 1 403-turn secondary coil.If the current in the secondary is 3.49 A,what is the primary current?

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

A series RLC circuit has an inductive reactance of 5 Ω and a capacitive reactance of 1/5 Ω.By what factor should the AC frequency be changed to put this circuit into resonance?

A 13.7-μF capacitor is connected to an AC source with an rms voltage of 148 V and a frequency of 40.0 Hz.What is the rms current in the capacitor?

The primary winding of an electric train transformer has 445 turns,and the secondary has 300.If the input voltage is 118 V(rms),what is the output voltage?

What is the impedance of an AC series circuit that is constructed of a 10.0-Ω resistor along with 24.0-Ω inductive reactance and 7.0-Ω capacitive reactance?

An AC power generator produces 27 A (rms)at 4730 V.The energy is transmitted through a long-distance power line,which has a total resistance of 173 Ω.What percentage of the power delivered by the generator is dissipated as heat in the long-distance line if a step-up transformer is not used?

An electromagnetic wave with a peak magnetic field component of 1.59 × 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)

Determine the amount of energy carried in 2.0 m of a 4.6-mW He-Ne laser beam if the cross-sectional area of the beam is 4.1 × 10−6 m2.

How is the direction of propagation of an electromagnetic wave oriented relative to the associated And Fields?

A radio wave signal,which transmits at a frequency of 5.64 MHz,has what wavelength? (c = 3.00 × 108 m/s)

A solar cell has a light-gathering area of 12.4 cm2 and produces 0.49 A at 0.93 V (dc)when illuminated with sunlight of intensity 884 W/m2.What is the efficiency of the solar cell?

When an RLC series circuit is in resonance,its impedance is:

An electromagnetic wave with a peak electric field component of 1.11 × 102 N/C has what associated peak magnetic field value? (ε0 = 8.85 × 10−12 C2/N⋅m2,μ0 = 4π × 10−7 T⋅m/A and c = 3.00 × 108 m/s)

A transformer is to be designed to increase the 27-kV (rms)output of a generator to the transmission line voltage of 346 kV (rms).If the primary winding has 95 turns,how many turns must the secondary have?

The human eye is sensitive to light with wavelength down to 710 nm.What is the frequency of radiation at this wavelength? (1 nm = 10−9 m and c = 3.00 × 108 m/s)

A 6.0-J pulse of light from a laser has what momentum?

An engineer designed a transformer to convert 120 V (rms) to 6.0 V (rms). The number of turns in the primary is 540, and the secondary current is 610 mA at an output voltage of 6.0 V (rms). -​What is the current in the primary?

An AC voltage source,with a peak output of 114 V,is connected to a 40.0-Ω resistor.What is the effective (or rms)current in the circuit?

Which type of electromagnetic wave has the largest wavelength?​

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An electromagnetic wave with a peak magnetic field component of 1.59 × 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)

Determine the amount of energy carried in 2.0 m of a 4.6-mW He-Ne laser beam if the cross-sectional area of the beam is 4.1 × 10−⁶ m².

A radio wave signal,which transmits at a frequency of 5.64 MHz,has what wavelength? (c = 3.00 × 10⁸ m/s)

A solar cell has a light-gathering area of 12.4 cm² and produces 0.49 A at 0.93 V (dc)when illuminated with sunlight of intensity 884 W/m².What is the efficiency of the solar cell?

An electromagnetic wave with a peak electric field component of 1.11 × 10² N/C has what associated peak magnetic field value? (ε₀ = 8.85 × 10−¹² C²/N⋅m²,μ₀ = 4π × 10−⁷ T⋅m/A and c = 3.00 × 10⁸ m/s)

The human eye is sensitive to light with wavelength down to 710 nm.What is the frequency of radiation at this wavelength? (1 nm = 10−⁹ m and c = 3.00 × 10⁸ m/s)

An engineer designed a transformer to convert 120 V (rms) to 6.0 V (rms). The number of turns in the primary is 540, and the secondary current is 610 mA at an output voltage of 6.0 V (rms). -What is the current in the primary?

Which type of electromagnetic wave has the largest wavelength?