The emf induced in the secondary coil due to | vedclass

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(C) The induced emf $(e_s)$ in the secondary coil is given by the relation $e_s = -M \frac{di_p}{dt}$,where $M$ is the coefficient of mutual induction

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Mutual induction of two coils

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(C) The induced emf $(e_s)$ in the secondary coil is given by the relation $e_s = -M \frac{di_p}{dt}$,where $M$ is the coefficient of mutual induction and $\frac{di_p}{dt}$ is the rate of change of current in the primary coil.If the rate of change of current in the primary coil is unit,i.e.,$\frac{di_p}{dt} = 1 \ A/s$,then the magnitude of induced emf is equal to the coefficient of mutual induction $(|e_s| = M)$.Therefore,the emf induced in the secondary coil due to a unit rate of change of current in the primary coil is defined as the mutual induction (or mutual inductance) of the two coils.

The emf induced in the secondary coil due to unit rate of change of current in the primary is called

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