Calculate the current and resistance of a 100 w , 200 v electric bulb .
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Answer:Given,power=100w
Voltage=200v
Now,p=V²/R
R=v²/p
R=200×200/100
R=20×20
R=400ohms
By ohms law
V=iR
i=v/R
i=200/400
i=2/4
i=0.5 amperes....
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Hope u will understand it.......
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