Question

Different ail between the self induction and mutual induction

Answer 1

Inductance is a property of an electrical circuit which causes an e.m.f to be generated in it or in the neighboring circuit due to the change in the current flowing through the circuit.

Self inductance is the property of a single isolated coil to induce an e.m.f in it in accordance with the change in the magnetic flux linked with it.

When the e.m.f is induced in a coil because of the change in the current in the coupled coil. This effect is called mutual inductance. 

Answer 2

Self-induction takes place using only two coils. This feature is primarily deployed in transformers. When the primary current in the coil increases/decreases, the induced current opposes the increase/decrease of the current through the coil.

Mutual induction takes place with just one coil. This feature is mostly utilized in electric motors. When the primary current in the coil increases/decreases, the induced current in the adjacent coil opposes the increase/decrease of the current through the coil.