Question

Which among the following is the condition for electromagnetic induction to take place?

• A. There must be a relative motion between the coil and the galvanometer.
• B. There must be a relative motion between the galvanometer and the magnet.
• C. There must be a relative motion between the galvanometer and the generator.
• D. There must be a relative motion between the coil and a magnet.

Answer 1

The correct option is D

There must be a relative motion between the coil and a magnet.

Whenever there is a change in the magnetic flux linked with the coil, emf is induced in the coil. This phenomenon is called electromagnetic induction.

To have an electromagnetic induction in a coil having certain number of turns using a bar magnet, there should be a relative motion between the coil and the magnet. When we mention the word relative, either a coil, or a magnet or both should move towards or away from each other.