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In an A.C. circuit, the current flowing ...

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

A

1000 watt

B

40 watt

C

20 watt

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
D
Power `P = I_(r.m.s) xx V_(r.m.s) xx cos phi`
In the given problem , the phase difference between voltage and current in `p//2` .Hence `P = I_(r.m.s) xx V_(r.m.s) xx cos (pi //2) = 0`
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