Questions
An electric bulb rated for 500 W at 100V is used in a circuit having a 200 V supply. The resistance R that must be put in series with the bulb, so that the bulb delivers 500W is …
detailed solution
Correct option is T
Resistance of the bulb is
Bulb delivers a power of 500 W at 100 V
So
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detailed solution
Correct answer is 20
Resistance of the bulb is
Bulb delivers a power of 500 W at 100 V
So
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