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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Answered by
5
110=(220)^2
110=48400÷100
R =484 ohms
P =V^2÷R
=(110)^2÷484
=110×110÷484
Ans =25W
Answered by
0
Answer:
your ans is D 25 w
I hope it helps you
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