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an electric bulb is related220 V and 100 W when it is operated on 110 V the power consumed will be

Asked by kartik2811somvanshi | 22 Jun, 2021, 08:44: AM
Resistance R and Power P are related as

P = V2 / R

where V is voltage

Hence Power is directly proportional to square of voltage but resistance will remain constant.

Hence when voltage is halved , power is reduced by a factor (1/4)

Hence power consumed by the bulb at 110 V is (100/4) = 25 W

Answered by Thiyagarajan K | 22 Jun, 2021, 09:26: AM

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