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Questions  >>  CBSE XII  >>  Physics  >>  Current Electricity
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Q)

Two electric lamps A and B are marked. $220\;V- 100\;w$ and $220\;V-60\;W$ Out of the two which lamp has higher resistance ?

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A)
Solution :
We know $P=\large\frac{V^2}{R}$
=> $P \infty \large\frac{1}{R}$
Therefore $220\;V-60W$ lamp has higher resistance
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