Question

An electromagnet is used in

• A. Electric oven
• B. Ammeter
• C. Electric bell
• D. radio set

Answer 1

The correct option is C

Electric bell

Explanation for correct:

1. An electromagnet is a temporary magnet that acts like a magnet when current is passed through a copper wire and loses its magnetism when current is passed through it.
2. It is used in electric bell .
3. The electromagnet is powered and generates a magnetic field that attracts the iron strip towards it in the electric bell.

Explanation for Incorrect:

1. Option-A: Electric oven is the device that converts electric energy into heat energy, there is no use of electromagnet in it.
2. Option-B: Ammeter is the device that measured electric current, and uses a horseshoe magnet.
3. Option-D: Radio set is a device that converts electric energy into sound energy, uses a permanent magnet

Hence, the correct option is C