A change of current in the primary coil from to uniformly in produces an average emf…

PHYSICS · Subjective · CBSE · Physics · Electromagnetic Induction · Electromagnetic Induction

Problem

A change of current in the primary coil from

4.0\,\text{A}

2.0\,\text{A}

uniformly in

10\,\text{ms}

produces an average emf of

50\,\text{mV}

in the secondary coil. Calculate the coefficient of mutual inductance of the pair of coils.