NEET 2004 Physics question

When three identical bulbs of 60 watt, 200 volt rating are connected in series to a 200 volt supply, the power drawn by them will be :-

Answer: (3)

Solution

Resistance of each bulb from its rating: . In series the total resistance is , so the power drawn from the 200 V supply is \dfrac{V^2}{3R}$ =

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Question ID VK-089335