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Question: Heat produced in a wire of resistance R due to current flowing at constant potential difference is p...

Heat produced in a wire of resistance R due to current flowing at constant potential difference is proportional to

A

1R2\frac{1}{R^{2}}

B

1R\frac{1}{R}

C

R

D

R2R^{2}

Answer

1R\frac{1}{R}

Explanation

Solution

At constant p.d., heat produced =V2Ri.e.H∝1R= \frac{V^{2}}{R}i.e.H \propto \frac{1}{R}