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Principle of MUTUAL INDUCTION

DEFINITION

Mutual induction is Define as when two coil are placed

together and passed current through the one coil which is produce the

magnetic flux that flux link with another coil. Hence that flux produced the

EMF in another coil.

EXPLANATION:

Fig:- mutual-inductance

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Consider two coils are placed together as shown in figure.

When current is passed through the primary coil, magnetic flux is

produced. This magnetic flux is link with the secondary coil. If the current

is change by varying the resistance in the primary circuit using tapping, the

magnetic flux also change. As this changing flux is link with the secondary

coil, that changing flux is induces an EMF (Electro Motive Force) in

secondary coil. This phenomenon of inducing EMF in a coil by changing

current in another coil is known as mutual induction.

It is the phenomenon in which a change of current in one coil

causes an induced EMF in another coil placed nearer to the coil. The coil in

which current is changed is called primary coil and the coil in which

EMF is induced is called secondary coil.

Statement :-

If two coil of conducting wire are keep into close proximity

with each other than the magnetic flux of one coil is link with the other

coil. As a result of generated EMF in other coil that phenomenon known as

the mutual inductance.

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Example:

Transformer is also work on this principle of mutual inductance.

Fig: principle of Transformer

A transformer is work on mutual inductance between two

circuits which is linked by a common magnetic flux. A basic transformer

consists of two coils primary and secondary winding that are electrically

separate and inductive, but are magnetically linked through a path of

reluctance. When AC supply is given to the primary winding magnetic flux

that flux is link with secondary winding and EMF is produce in it.

Mutual inductance is that one magnetic field is interacts with another

magnetic field. The transformer, motors, generators and any other

electrical equipment is work on the principle if mutual inductance.

Mutual induction is that the current flowing in one coil or winding that

induce a voltage in an another coil.