Question

Current through a metallic conductor is doubled while its resistance and the time are held constant.Under these conditions,the heat generated in the conductor will increase by a factor of

Answer 1

Answer:

four

Explanation:

because the heat produced is directly proportional to the current squared

Answer 2

Answer:

Use Jules heating effect

H=I^2Rt

I=2I

R and t constant

So H=(2I)^2Rt

=4I^2Rt

Here heat generated by the conductor will increase by a factor of 4