Question

a) Define Electromagnetic Induction.


b) Who proposed it?

c) List out any three ways by which we can increase the induced current during the process of Electromagnetic Induction​

Answer 1

Answer:

a.Electromagnetic or magnetic induction is the production of an electromotive force across an electrical conductor in a changing magnetic field. ... Electromagnetic induction has found many applications, including electrical components such as inductors and transformers, and devices such as electric motors and generators.

b.The discovery of electromagnetic induction in the early part of the 19th century is one of the greatest scientific achievements of all time, and it has had tremendous technological consequences. The credit for this discovery rightfully goes to the great English experimental physicist Michael Faraday

1). Increasing the number of turns of wire in the coil – By increasing the amount of individual conductors cutting through the magnetic field, the amount of induced emf produced will be the sum of all the individual loops of the coil, so if there are 20 turns in the coil there will be 20 times more induced emf than in one piece of wire.

2). Increasing the speed of the relative motion between the coil and the magnet – If the same coil of wire passed through the same magnetic field but its speed or velocity is increased, the wire will cut the lines of flux at a faster rate so more induced emf would be produced.

3). Increasing the strength of the magnetic field – If the same coil of wire is moved at the same speed through a stronger magnetic field, there will be more emf produced because there are more lines of force to cut.

Explanation:

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