Electromagnetic induction is the process of generating an electric current with a magnetic field. It was discovered by Michael Faraday in 1831, and James Clerk Maxwell mathematically described it as Faraday’s law of induction. Electromagnetic induction occurs when a conductor is placed in a changing magnetic field, which causes the production of a voltage across the conductor/10%3A_Electromagnetic_Induction). The amount of voltage induced in a coil is proportional to the number of turns of the coil and the rate of changing magnetic field.

There are two ways to induce an electric current in a coil: by moving the coil relative to a fixed magnet or by keeping the coil fixed and moving a magnet relative to it. AC generators work on the principle of electromagnetic induction, and the working of electrical transformers is also based on this principle.

The significance of this discovery is that it provides a way of producing electrical energy in a circuit by using magnetic fields and not just batteries. Everyday machines like motors, generators, and transformers work on the principle of electromagnetic induction.

In summary, electromagnetic induction is the process of generating an electric current with a magnetic field. It was discovered by Michael Faraday in 1831 and is described mathematically as Faraday’s law of induction. The amount of voltage induced in a coil is proportional to the number of turns of the coil and the rate of changing magnetic field. AC generators and electrical transformers work on the principle of electromagnetic induction.