# RL Circuits – Exercise – 1

RL Circuits » Exercise – 1

1. When the frequency of the voltage applied to a series RL circuit is increased, the phase angle ________. (a) decreases (b) increases (c) does not change (d) cannot be determined without values

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2. When the frequency of the voltage applied to a series RL circuit is decreased, the impedance ________. (a) decreases (b) increases (c) does not change (d) cannot be determined without values

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3. If the frequency is halved and the resistance is doubled, the impedance of a series RL circuit ________. (a) doubles (b) halves (c) remains constant (d) cannot be determined without values

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4. When the resistor voltage in a series RL circuit becomes less than the inductor voltage, the phase angle ________. (a) increases (b) decreases (c) is not affected (d) cannot be determined

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5. When the frequency is decreased, the impedance of a parallel RL circuit ________. (a) increases (b) decreases (c) remains constant (d) is not a factor