Electromagnets

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

What is a permanent magnet?

Back

A permanent magnet is a material that maintains a persistent magnetic field without the need for an external power source.

Front

What happens when you bring two similar poles of magnets together?

Back

Similar poles of magnets repel each other.

Front

What happens when you bring two opposite poles of magnets together?

Back

Opposite poles of magnets attract each other.

Front

How can you make an electromagnet stronger?

Back

You can make an electromagnet stronger by using thicker wire, increasing the number of coils, or increasing the electric current.

Front

What is the role of a compass needle in a magnetic field?

Back

A compass needle is a small magnet that aligns itself with the Earth's magnetic field, pointing towards magnetic north.

Front

What materials can be used to make a magnet?

Back

Common materials used to make magnets include iron, nickel, and cobalt.

Front

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

Back

An electromagnet requires electric current to generate a magnetic field, while a permanent magnet has a constant magnetic field without electricity.

Front

What is magnetic attraction?

Back

Magnetic attraction is the force that pulls together opposite poles of magnets.

Front

What is magnetic repulsion?

Back

Magnetic repulsion is the force that pushes apart similar poles of magnets.