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
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
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
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
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
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