Answer:

a) The term “electromagnet” refers to a temporary magnet that operates when current is supplied through it. In order to construct an electromagnet, a soft iron is used with an insulated copper wire coiled around its circumference. Making an electromagnet is accomplished by connecting the battery’s positive and negative ends of the copper wire together.

b) As previously stated, an electromagnet is also referred to as a transient magnet due to the fact that the magnetic field generated by an electromagnet is dependent on the passage of current through its coil.