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A 220 V -60W electric bulb is connected ...

A 220 V -60W electric bulb is connected in 220 V line . What is the resistance of the filament of the bulb , when it is tured on ?

Text Solution

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power , `P=VI=V.(V)/(R)=(V^(2))/(R)[thereforeV=IR]`
`therefore" " R=(V^(2))/(P)=(220xx220)/(60)=806.67Omega`
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