Question

what is mutual induction?Define co-efficient of mutual induction. calculate co-efficient of mutual induction between two long solenoids.​

Answer 1

Answer:

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Explanation:

Mutual induction is defined as the property of the coils that enables it to oppose the changes in the current in another coil. With a change in the current of one coil, the flow changes too thus inducing EMF in the other coil. This phenomenon is known as mutual induction.

Coefficient of mutual induction

IP is the current in coil P and φs is the magnetic flux linked with coil S due to the current in coil P.

where M is a constant of proportionality and is called the coefficient of mutual induction or mutual inductance between the two coils.

IfIP = 1A, then, M = φs

Thus, coefficient of mutual induction of two coils is numerically equal to the magnetic flux linked with one coil when unit current flows through the neighbouring coil. If es is the induced emf in the coil (S) at any instant of time, then from the laws of electromagnetic induction,

Thus, the coefficient of mutual induction of two coils is numerically equal to the emf induced in one coil when the rate of change of current through the other coil is unity. The unit of coefficient of mutual induction is henry.

Answer 2

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