Question

For making a strong electromagnet, the material of the core should be.

Answer 1

Determine the material of soft iron:

1. In order to be an electromagnet, the core must show a strong magnetic field when current is passed through the coil.
2. The core must lose its magnetism as well when the current flow has stopped.
3. Thus, the core acts as a temporary magnet.
4. This property is only exhibited by a soft iron core.

Hence, for making a strong electromagnet, the material of the core should be soft iron.