What should be the core of an electromagnet? a. soft iron b. hard iron c. rusted iron d. none of above
Option A - Soft Iron. When an electric current is passed via an insulated copper wire, an electromagnet behaves like a magnet and loses its magnetism when the current is interrupted. It consists of a core that is made up of a soft iron piece with an insulated copper wire wound on it. When an electric current passes through the solenoid, soft iron acquires magnetic properties, and when there is no electric current, soft iron loses magnetic properties. Therefore, soft iron is chosen for the core of the electromagnet.
