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In an AC circuit, the current is given b...

In an `AC` circuit, the current is given by `i=5sin(100t-(pi)/2)` and the `AC` potential is `V=200sin(100t)`volt. Then the power consumption is

A

`20` watts

B

`40` watt

C

`1000` watt

D

`0` watt

Text Solution

Verified by Experts

The correct Answer is:
D
`P=V_(i)cos varphi`
Phase difference `varphi=(pi)/2 implies P=zero`
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Knowledge Check

  • In an AC circuit, the current is given by i=5sin(100t-(pi)/2) and the AC potential is V=200sin(100) volt. Then the power consumption is

    A
    `20` watt
    B
    `40` watt
    C
    `1000` watt
    D
    `0` watt

  • In an A.C. circuit, the current flowing is I = 5 sin (100t-pi//2) ampere and the potential difference is V = 200 sin (100t) volts. The power consumption is equal to

    A
    20 W
    B
    0 W
    C
    1000 W
    D
    40 W

  • In an A.C. Circuit, the current is given by I=6 sin(200 pi t+(pi)/6)A The initial value of the current is

    A
    1A
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    2A
    C
    3A
    D
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