Question

an electromagnet is ____

a permanent magnet
made with bar magnets
able to attract all metal substances
only operating when the current is on

Answer 1

An electromagnet is created by wrapping a coil of wire around a ferrous metal and applying a current to that coil.

Answer 2

An electromagnet is a copper coil wrapped around a iron core.
By having current flowing through it, it creates a magnetic field that allows it lift metal substances. And it can attract/repel, other magnetic poles from other magnetic substances like a bar magnet or another electromagnet.