JEE PHYSICS MCQ: CURRENT ELECTRICITY

1 Hard

1 of 1

Application +4 | -1

It takes 12 minutes to boil 1 litre of water in an electric kettle. Due to some defect it becomes necessary to remove

20 \%

turns of heating coil of the kettle. After repair, how much time will it take to boil 1 litre of water?

View answer and explanation

Correct option: A

9.6

minute

Option A (

9.6

minute) is correct because it calculates the new boiling time after reducing the heating coil turns, considering the change in resistance and heat produced.

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