NEET UG PHYSICS MCQ: ALTERNATING CURRENT

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Analyzing +4 | -1

Voltage and current in an ac circuit are given by

V=5 \sin \left(100 \pi t-\frac{\pi}{6}\right)

and

I=4 \sin \left(100 \pi t+\frac{\pi}{6}\right)

View answer and explanation

Correct option: C

Current leads the voltage by

60^{\circ}

Option C (Current leads the voltage by

60^{\circ}

) is correct because the phase angle of the current is

\frac{\pi}{6}

and the phase angle of the voltage is

-\frac{\pi}{6}

, so the current leads the voltage by

\frac{\pi}{6} - (-\frac{\pi}{6}) = \frac{\pi}{3} = 60^{\circ}

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