Mutual induction principle

 Mutual induction

Mutual induction between two coils

When current flows through one coil or winding and, induced emf or voltage is produced in another coil. Mutual induction is characteristic of pair of coils. If two coils of a conducting wire are brought together so that the magnetic field from one coil links with the other, a voltage will be generated in the second coil. Mutual induction is the process of producing E.M.F in a coil when the current in the proximate coil change. Mutual induction is the basic operating principle of a transformer and other electrical machines or devices. When power is supplied to a coil, current flows in that coil or winding and produces a magnetic field, and induces a voltage in the neighboring winding. When emf induce in the adjacent coil. When two or more coils are linked magnetically with the same magnetic field then they possess mutual induction. 

Mutual induction

Let's consider we have two coils that are placed together when current is passed through the primary coil, magnetic flux is produced. If current changes in the coil, flux also changes, and flux links with the second coil. This changing flux produces induced emf in the secondary coil. This whole phenomenon of induced emf in a coil by a change in current and flux in another coil is the principle of mutual induction. A transformer also works on the principle of mutual induction. Which consist of two coils primary and secondary coils and magnetically connected. When power is supplied to the primary coil current flows through the coil and produces a magnetic flux that links with the secondary coil and induced emf produced. There are applications of mutual induction such as generators, induction motors, transformers, digital signal processing, and other electrical machines and devices.

Emf induces in the second coil when a change in flux in the first coil link to another coil