Question

Explain why an electromagnet is called a temporary magnet.

Answer 1

Electromagnet:

1. When an electric current is used to induce a magnetic field, hence showing magnetic properties it is called an electromagnet.
2. There are generally made up of a metallic core wounded by conducting wires.
3. The current flowing through this wire generates the magnetic field.
4. Due to the magnetic flux generated by this magnetic field, the metallic core acts as a magnet.
5. Hence, the magnetic field disappears when the current flow is stopped.
6. Therefore, the metallic core loses its magnetic properties and is called a temporary magnet,