Answer / wiki

When AC is applied to a coil, a varying magnetic field will
be produced around it. When another coil is placed within
that magnetic field, it will induce a current flowing in
that coil. This principle is called MUTUAL INDUCTANCE


The amount of mutual inductance between the two coils
depends on the distance between the two coils, and the
angle between the two coils. When two coils are linked
together via mutual inductance in this manner, we say that
the coils are inductively COUPLED. When the mutually
inductive coils are close to each other, we say that they
are closely, or tightly coupled. When they are far apart,
we say that they are loosely coupled. The greatest amount
of coupling occurs when the coils are wound one directly
over the other and on a closed iron core. The quantity of
coupling between two coils is sometimes referred to as the
Coefficient of Coupling. The formula for Coefficient of
Coupling is:
K=M/ROOT OF(L1*L2)

Answer / rider

Mutual inductance refers to two independent coils which are
electrically isolated but magnetically coupled through a
path of low reluctance .This will cause most of the energy
produced in the primary side to transfer to the secondary
with minimal losses.That is why transformers which
functioning on the principle of mutual induction has
efficiency ner 99%.

Answer / srinath

If the change of current in one coil is accompanied by change of flux in the second coil and therefor an emf is induced in the latter ,then the two coils are said to have mutual induction .Two coils are said to have a mutual induction of one henry if an emf of one volt is induced due to change of current that is varying at the rate of 1 amphere per sec.

Answer / samad

when place near two coil and supply the one coil then flux
is create around the coil and these flux cut the turns of
another coil and flux is create that coil and emf is
produced.this is called mutal induction

Answer / dipserish bk

when an alternating e.m.f. is applied to the primary coil, a changing current flowing in it produces an alternating magnetic flux in it. this causes the change in magnetic flux linked with the secondary coil. an alternating e.m.f. is then induced in the secondary coil. this is called principle of mutual induction

Answer / sanjiv

Mutual Inductance between the two coils is defined as the property of the coil due to which it opposes the change of current in the other coil, or you can say in the neighboring coil. When the current in the neighboring coil is changing, the flux sets up in the coil and because of this changing flux emf is induced in the coil called Mutually Induced emf and the phenomenon is known as Mutual Inductance.
The value of Mutual Inductance (M) depends upon the following factors

*-Number of turns in the secondary or neighboring coil
*-Cross-sectional area
*-Closeness of the two coils
Mutual Coupling In the Magnetic Circuit

When on a magnetic core, two or more than two coils are wound the coils are said to be mutually coupled. The current, when passed in any of the coils wound around the magnetic core, produces flux which links all the coils together and also the one in which current is passed. Hence, there will be both self-induced emf and mutual induced emf in each of the coils.

-The best example of the mutual inductance is a transformer, which works on the principle of Faraday’s Law of Electromagnetic Induction.

Faraday’s law of electromagnetic induction states that “ the magnitude of voltage is directly proportional to the rate of change of flux.” which is explained in the topic Faraday’s Law of Electromagnetic Induction.

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