Question

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

• A. Soft iron
• B. Steel
• C. Brass
• D. Copper

Answer 1

The correct option is A

Soft iron

For making a strong electromagnet, the material of the core should be made up of soft iron. The soft iron inside the coil makes the magnetic field stronger because it becomes a magnet itself when the current is flowing through it. Soft iron is used because it loses its magnetism as soon as the current stops flowing. In this way, the electromagnet can be switched on and off by turning the electricity on and off respectively.