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

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An electric bulb is rated 220 V and 100 W. When it is operated on 110 V, the power consumed will be:-
(a) 100 W
(b) 75 W
(c) 50 W
(d) 25 W

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The answer is (d) 25 W

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