An electric bulb is rated 220V and 100W. When it is operated on 110V, the power consumed will be:

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asked Jan 22, 2018 in Physics by Kundan kumar (49,132 points) 34 378 1010

An electric bulb is rated 220V and 100W. When it is operated on 110V, the power consumed will be:

(a)100W (b) 75W (c) 50W (d) 25W

1 Answer

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answered Jan 22, 2018 by Vikash Kumar (144,729 points) 8 11 21
selected Jan 23, 2018 by Kundan kumar
 
Best answer

We have, P=V2/R

Hence, the correct answer is (d).

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