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A lamp of 100 W works at 220 volt. What ...

A lamp of 100 W works at 220 volt. What is its resistance and current capacity?

Text Solution

Verified by Experts

P = 100 W
V = 220 V
R = ?
I = ?
`R=V^2/P=(220xx220)/100 =484 Omega`
`I = P/V = 100/220 = 0.45 A`
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