Question

An electric bulb is rated 220V and 100W. When operated at 110V , the power will consumed will be ?​

Answer 1

Answer:

R = 220^2/100 Ω = 484 Ω. This is the resistance of the bulb. When V = 110 V, power consumed = V^2/R = 110^2/484 = 25 W. So, 25 W power is consumed when it is operated on 110 V.

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Answer 2

Answer:

22000/110

2000

Explanation:

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