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The current and voltage functions in an ...

The current and voltage functions in an `AC` circuit are
`i=100 sin 100 tmA, V=100sin(100t+pi/2)V`
The power disspitated in the circuit is

A

`10 W`

B

`2.5W`

C

`5W`

D

`5kW`

Text Solution

Verified by Experts

The correct Answer is:
B
`P=V_(rms)I_(rms)cosphi`
`=(100/sqrt2)((100xx10^-3)/sqrt2).cos(pi/3)`
`=2.5W`
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