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  • <img alt="\mathrm{\text { Voltage and current in an ac circuit are given by } V=5 \sin \left(100 \pi t-\frac{\pi}{6}\right) \text { and }}" src="https://entrancecorner.oncodecogs.com/gif.latex?%5Cm

\mathrm{\text { Voltage and current in an ac circuit are given by } V=5 \sin \left(100 \pi t-\frac{\pi}{6}\right) \text { and }} \mathrm{\mathrm{i}=4 \sin \left(100 \pi \mathrm{t}+\frac{\pi}{6}\right)}

Option: 1

Voltage leads the current by 30°


Option: 2

Current leads the voltage by 30°


Option: 3

Current leads the voltage by 60°


Option: 4

Voltage leads the current by 60°


Answers (1)

best_answer

\mathrm{\text { Phase difference relative to current } \Delta \varphi=-\frac{\pi}{6}-\frac{\pi}{6}=-\frac{\pi}{3}}

\mathrm{\text { In degree } \Delta p=-60^{\circ} \text { i.e. voltage lag behind the current by } 60^{\circ} \text { or current leads the voltage }} \mathrm{\text { by } 60^{\circ} \text {. }}

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Divya Prakash Singh

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