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An AC generator of 220 V having internal...

An AC generator of 220 V having internal resistance `r=10 Omega` and external resistance `R=100 Omega`. What is the power developed in the external circuit?

A

484 W

B

400 W

C

441 W

D

369 W

Text Solution

Verified by Experts

The correct Answer is:
B
`V=220V,r=10Omega`
`R.=100+10=110Omega`
`I=V/R=220/110=2A`
`thereforeP=I^(2)R=4xx100=400` watt.
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