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Voltage and current in an a.c. circuit a...

Voltage and current in an a.c. circuit are given by `V = 5 sin (100 pit-pi/6)` and `1 = 4 sin (100 pi t + pi/6)`.

A

voltage leads the current by `30^@`

B

current leads the voltage by `30^@`

C

voltage leads the current by `60^@`

D

current leads the voltage by `60^@`

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