# 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

Explanation
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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

Explanation
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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

Explanation
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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

Explanation
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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

Explanation
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