Electricity and Magnetism

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet in which the magnetic field is produced by an electric current. It can be turned on and off.

Front

How do electromagnets differ from regular magnets?

Back

Electromagnets can be turned off and on, their polarity can be reversed, and their strength can be changed.

Front

What happens to the force between two magnets as the distance between them increases?

Back

The force between two magnets decreases as the distance between them increases.

Front

What is the effect of adding more coils of wire to an electromagnet?

Back

Adding more coils of wire to an electromagnet increases its strength.

Front

What is the role of a switch in an electromagnet circuit?

Back

A switch controls the flow of electricity, allowing the electromagnet to be turned on or off.

Front

What is magnetic field?

Back

A magnetic field is the area around a magnet where magnetic forces can be detected.

Front

What materials can be used to make an electromagnet?

Back

Common materials include iron, steel, and other ferromagnetic materials.

Front

What is the relationship between electric current and magnetic field strength in an electromagnet?

Back

The strength of the magnetic field in an electromagnet increases with the amount of electric current flowing through the wire.

Front

What is the purpose of a battery in an electromagnet circuit?

Back

A battery provides the electric current needed to create a magnetic field in the electromagnet.

Front

What happens when the poles of a magnet are reversed?

Back

Reversing the poles of a magnet changes the direction of the magnetic field.