Explain why the core of an electromagnet should be of soft iron and not of steel.


Core of an electromagnet should be of soft iron and not of steel because soft iron loses all its magnetism when current in the coil is switched off but steel does not lose its magnetism when the current is stopped.

Final Answer:

Hence, the core of an electromagnet should be of soft iron because soft iron loses all its magnetism when the current in the coil is switched off, unlike steel which does not lose its magnetism when the current is stopped.