# College Physics Study Set 7

Physics & Astronomy

## Quiz 21 :Alternating Current Circuits and Electromagnetic Waves

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In an AC series circuit the inductive reactance is 50 W and the frequency is 100 Hz.What is the inductance in the circuit?
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A

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In a capacitor in an AC circuit, the voltage:
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B

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In an AC series circuit the capacitive reactance is 200 W and frequency is 100 Hz.What is the capacitance?
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C

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What is the effective (rms) current value for an AC current with an amplitude of 10 A?
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An AC voltage source, with a peak output of 200 V, is connected to a 50-W resistor.What is the rate of energy dissipated due to heat in the resistor?
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In the typical household AC voltage of 120 V, what is the peak voltage?
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The current in an inductor connected to an AC voltage source lags the voltage.This lag is caused by the:
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In an AC series circuit, the current in a pure resistor differs in phase with the applied voltage by what angle?
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What is the phase angle of an AC series circuit that is constructed of a 10.0-W resistor along with 12.00 W inductive reactance and 7.00 W capacitive reactance?
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In an AC series circuit, the voltage in the inductor differs in phase with the voltage in the capacitor by what angle?
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In the inductor of a 60-Hz AC series circuit, the peak voltage precedes the peak current in each cycle by what time interval?
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An AC voltage source, with a peak output of 120 V, results in dissipation of energy in a resistor at rate of 100 W.What is the value of the resistance?
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An AC voltage source, with a peak output of 200 V, is connected to a 50-W resistor.What is the effective (or rms) current in the circuit?
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A 12.0-mF capacitor is connected to an AC source with an rms voltage of 120 V and a frequency of 60.0 Hz.What is the rms current in the capacitor?
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The rms current is equal to the direct current that:
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When a 50-mF capacitor is attached to an AC source, its capacitive reactance is 40 W.If instead a 100-mF capacitor is attached to the same source, what will be its capacitive reactance?
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What is the impedance of an AC series circuit that is constructed of a 10.0-W resistor along with 12.0 W inductive reactance and 7.0 W capacitive reactance?
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The rate of heat dissipation in an AC circuit with resistance, R, and effective current, Irms, is given by which of the following?
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