Question

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.

Answer 1

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