A 220 V, 1000 W bulb is connected across...

A `220 V, 1000 W` bulb is connected across a `110 V` main supply. The power consumed will be

A

750W

B

500W

C

250W

D

1000W

Text Solution

Verified by Experts

`R=V^2/P=(220)^2/1000` where, V and P are denoting rated voltage and power, respectively
`therefore P_(consumed)=V_(applied)^2/R=(110 times 110)/(220 times 220) times 1000=250W`

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