An electric bulb is rated 220 V, 110 W.
When it is operated on 110 V, the power
consumed will be:
(1) 55 W
(2) 110 W
(3) 25 W
(4) 27.5 W
Answers
Answered by
9
P = V²/R
If V = 220 V we have
100 W = 220²/R
R = 220²/110 Ω = 440 Ω. This is the resistance of the bulb.
When V = 110 V, power consumed = V²/R = 110²/440 = 27.5 W.
So, 27 .5 W power is consumed when it is operated on 110 V. \
Answered by
3
Answer:
Explanation:
27.5 is the answer i will not give explanation i gave in another account mark above answer as brainliest
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