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  • The instantaneous values of current and voltage in an ac circuit are given by <img alt="I=6 \sin \left(100 \pi t+\frac{\pi}{4}\right), V=5 \sin \left(100 t \pi-\frac{\pi}{4}\right) \text {,

The instantaneous values of current and voltage in an ac circuit are given by
I=6 \sin \left(100 \pi t+\frac{\pi}{4}\right), V=5 \sin \left(100 t \pi-\frac{\pi}{4}\right) \text {, then }

Option: 1

current leads the voltage by 45°


Option: 2

voltage leads the current by 90°


Option: 3

current leads the voltage by 90°


Option: 4

voltage leads the current by 45°


Answers (1)

best_answer

The phase difference between instantaneous value of I and V is
\frac{\pi}{4}-\left(-\frac{\pi}{4}\right)=\frac{\pi}{2}
Hence, current leads the voltage by 90°

Posted by

Shailly goel

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