Question

Describe how to make an electromagnet. Use the following words and phrases:

Power supply, coil of wire, current, iron core

Answer 1

Required items:

• battery

• a coil of wire

• iron core

Electromagnet can be created by wrapping a coil of wire on top of the iron core and passing an alternating current through it with the help of power supply.

• the magnetic field will be constantly changing.

Answer 2

Answer:

Explanation:

Unlike permanent magnet, electromagnet require a power supply to work.  The power supply drives an electric current through coil of wire wrapped around an iron core.