Question

How are electromagnets and magnets different?

A.) Electromagnets can be turned on and off, magnets cannot.
B.) Electromagnets only affect magnetic objects, normal magnets affect other materials as well.
C.) Electromagnets are stronger than magnets.
D.) Electromagnets and magnets are the same.

Answer 1

A. Electromagnets can be turned on and off, magnets cannot.

Step-by-step explanation:

Electromagnets are distinguished from permanent magnets by their ability to generate magnetic fields when electric current flows through them. In contrast, permanent magnets are as the name suggests, permanently magnetised. They do not need an electric current to generate magnetism.