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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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13 votes
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​

User Noriko
by
4.1k points

1 Answer

12 votes

Answer:

50 W

Step-by-step explanation:

Case 1

Power = V * I

100 = 220 * I

I =
(100)/(220) A

Case 2

P = V * I

P = 110 *
(100)/(220)

P = 50 W

I think the answer is 50 W

Hope it helps

User Sean S Lee
by
5.4k points
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