Question

How do you make an electromagnet

Answer 1

The correct answer is D. wrapping an insulated wire around a metal with ferromagnetic properties and applying an electric current.

Step-by-step explanation:

Answer 2

Putting a piece of iron or steel inside the coil makes the magnet strong enough to attract objects. The strength of an electromagnet can be increased by increasing the number of loops of wire around the iron core and by increasing the current or voltage.