Physics, asked by monalisachakrab5345, 1 year ago

An electric bulb rated for 500 w at 100 v is used in a circuit having a 200 v supply the resistance r that must be put in series with the bulb so that the bulb draws 500 w is

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Answered by hitengupta70p8kp5h

3

See the soln...
Ans is 20ohm....

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