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The instantaneous values of current and ...

The instantaneous values of current and voltage in an AC circuit are given by
l = 6sin ( 100`pi`t + `pi` / 4)
V = 5sin ( 100 `pi`t - `pi` / 4 ), then

A

current leads the voltage by `45^(@)`

B

voltage leads the current by `90^(@)`

C

current leads the voltage by `90^(@)`

D

voltage leads the current by `45^(@) `

Text Solution

Verified by Experts

The correct Answer is:
C
The phase difference between instantaneous value of _ and V is
`pi`/ 4 - (-`pi`/4) = `pi`/2
Hence current leads the voltage by `90^(@)`
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