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Questions  

An electric bulb is designed to draw Po power at Vo voltage, If the voltage is V, it draws P power. Then

a
P=V0VP0
b
P=VV02P0
c
P=V0V2P0
d
P=VV0P

detailed solution

Correct option is B

Let E be the resistance of each bulb.Then P0=V02R  or  R=V02P0Further  P=V2R=V2V02P0=VV02P0

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