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In an AC circuit, V and I are given by V...

In an `AC` circuit, `V` and `I` are given by `V=100sin(100t)volts, I=100sin(100t+(pi)/3)mA`. The power dissipated in circuit is

A

250 W

B

25 W

C

2.5 W

D

5 W

Text Solution

Verified by Experts

The correct Answer is:
C
Power (P) = `E_(V)I_(V) cos phi`
`=100/(sqrt2) xx 100/(sqrt2) xx 10^(-3) xx 1/2`
`=2500 xx 10^(-3) = 2.5 W`.
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