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B)Heat produced in a conductor is 200J when current is passed through it for 10s. If the half of the current is passed through the conductor for 10s then

find the heat produced.



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Heat produced is proportional to square of the current flowing in the circuit.

Heat\ produced\ \alpha\ I^2

So, if current is halved, heat produced will become 1/4.
So heat produced will be 200/4 = 50J
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