Question

An electromagnet retains the property of magnetism only until an ___________is passed through it.

Answer 1

1. An electromagnet is made up of a soft iron core that is insulated by copper wire.
2. When current is passed through an electromagnet, it behaves like a magnet and loses its magnetism when the current is stopped.
   Hence, An electromagnet retains the property of magnetism only until an electric current is passed through it.