Physics, asked by gautamkanand2003, 8 months ago

A filament bulb (400 W, 100 V) is to be used in a 220 V main supply when a resistance R is connected in series, it works perfectly and the bulb consume 400 W. The value of R ​

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Answered by student426
4

Answer:

30 ohm

Explanation:

30 ohm is the correct answer.I am sure

Answered by vasu1692
5

Explanation:

A filament bulb (400 W, 100 V) is to be used in a 220 V main supply when a resistance R is connected in series, it works perfectly and the bulb consume 400 W. The value of R is 25 ohm

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