Question

what should be the core of an electromagnet???? is it a soft iron, hard iron or rusted​

Answer 1

Answer:

Soft iron

Explanation:

It makes the magnetic field stronger when current is passed by itself becoming a magnet. Soft iron will lose magnetism as soon as the current is off.

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Answer 2

Answer:

The magnetic particles in a soft iron nail will line up with the magnetic field when the current is switched on. ... But also, the soft iron core becomes a magnet. It will add to the strength of the electromagnet. The effect of the soft iron core is much more than doubling the current or the number of turns.