Question

what is electromagnets? Mention two properties of an electromagnets

Answer 1

the magnets which are made from electricity is known as electromagnet..
two properties of electromagnet are :
1. The Strength of the electromagnets can be increased by increasing the current in the coil. 2. The Strength of the electromagnet can be increased by introducing a soft iron core inside the coil.

Answer 2

a soft metal core made into a magnet by the passage of electric current through a coil surrounding it.

i) It is temporary in nature . (ii) It is made of soft iron core . (iii) The magnetic field strength of an Electromagnet can be changed . (iv) It can be easily demagnetized by switching off the current .