Question

Which is not the use of an electromagnet?

विकल्प

• Used in electric appliances such as electric bell and electric fans.

• Used for magnetising steel bars.

• Used for making sensitive magnetic compass.

• Used in separating iron particles from a scrap of iron and other metals.

Answer 1

Used for making sensitive magnetic compass.

Explanation:

A sensitive magnetic compass uses a small permanent magnet needle, not an electromagnet. Electromagnets are used in electric bells and fans, for magnetising steel bars, and for separating iron scrap from other metals.