Question

An electric bulb is rated 220 volt and 10 watt .When it is operated on 110 volt , the power consumed will be ______


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Answer 1

Answer:

the power consumed when operated at 110 V is 50 W.

Explanation:

The power dissipated by an electric bulb is given as P = VI.

In this case, Power P = 100 W and Voltage V = 220 V.

So, current I is I = P/V = 100/220 = 0.45 A.

When the supplied voltage is 110 V, the power consumed will be P=VI = 110 * 0.45 = 50 W.

Hence, the power consumed when operated at 110 V is 50 W.