electromagnetic induction explain in brief

Hello Srikanthsarma

Electromagnetic or magnetic induction is the production of an electromotive force across an electrical conductor in a changing magnetic field. It was discovered by Michael Faraday. Faradays Law are assosciated with this concept. Inductors and transformers, and devices such as electric motors and generators find appliction of Electromagnetic induction.

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Regards

Hello,

1. Electromagnetic induction is the production of electromotive force across an electrical conductor in changing magnetic field.

2. The concept was discovered by Micheal Faraday in 1831.

3. The Farday's law of electromagnetic induction states that :

a. Whenever magnetic flux is linked with a circuit changes, the EMF in induced in it.

b. The induced EMF exists in the circuit so long as the change in magnetic fiux linked with it continues.

c. The emf induced in a coil of N turns is in direct proportional to the rate of change of flux through it."

Mathematically, it can be expressed as,

ε = −N x ( d / dt )

Here the numerator is the flux associated with only one turn of the coil. When the circuit is closed, a current I= ε R is found in it, where R is the resistance of the circuit.

Hope it Helps. Best wishes.