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Questions  

A sinusoidal alternating of peak value I0 passes through a heater of resistance R. what is the mean power output of the heater?

a
I2R2
b
I02R2
c
I32R
d
2I02R

detailed solution

Correct option is B

Root mean square current of the sinusoidal waveform.I=I02Power output of the heater,P=I2R=(I02)2R=I0 2R2

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