Electromagnets

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet that is created by electric current. It can be turned on and off.

Front

How can you turn an electromagnet off?

Back

By stopping the electric current flowing through it.

Front

What happens when you increase the number of coils of wire in an electromagnet?

Back

The strength of the electromagnet increases.

Front

What is the role of the battery in an electromagnet?

Back

The battery provides the electric current needed to create the magnetic field.

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet always has a magnetic field, while an electromagnet can be turned on and off.

Front

What happens when the north pole of one magnet meets the south pole of another magnet?

Back

They attract each other.

Front

What happens when the north pole of one magnet meets the north pole of another magnet?

Back

They repel each other.

Front

What materials are commonly used to make electromagnets?

Back

Copper wire and iron cores are commonly used.

Front

How can you make an electromagnet stronger?

Back

You can make it stronger by using thicker wire, adding more coils, or increasing the electric current.

Front

What is magnetic field?

Back

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