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Question

A 220 volt, 1000 watt bulb is connected across a 110 volt mains supply. The powerconsumed will be
750 watt
250 watt
500 watt
1000 watt

A

500 watt

B

250 watt

C

1000 watt

D

750 watt

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Solution

Verified by Toppr

The resistance of the bulb is $R = \frac{220^{2}}{1000} = 48.4$ ohm.
Power consumed, $P = \frac{V^{2}}{R} = \frac{110^{2}}{48.4} = 250$ watt

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