1.

Out of 60W and 40W lamps,which one has a higher electrical resistance when in use

Answer» But when we use formula P=I^2R then resistance is directionally proportional to P then what is the correct answer....
40 watt bulbs r of more resistance{in India} as if we take voltage as 220V and put in FORMULA=R=Volt square divided by power 60 watt has resistance 806 but 40 watt has resistance 1200


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