Question

An electric bulb is rated 200 volt and 500 w. When it is operated on 100 volt, the power consumed will be

Answer 1

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Answer 2

Answer:

125 Watt

Explanation:

voltage = 200V

Power=500 W

As we know, P=V²/R

Using this equation we get,  R=80 ohm;

Now power of voltage of bulb is changed to 100V;

Power consumed would be = V²/R = 100*100/80= 125 Watt.