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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 = 200 V , r = 10 Omega`
`R = 10 + 100 = 110 Omega`
`I = V/R = 220/110 = 2A`
`P = I^2 R =4 xx 100 = 400 W`
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