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A light bulb is rated at 100W for a 220 ...

A light bulb is rated at 100W for a 220 V supply. Find
The resistance of the bulb

Text Solution

Verified by Experts

`because`    P=`(V^(2))/(R)`    `therefore`    R=`(V^(2))/(P)`= `(220xx220)/(100)`= `484Omega`
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