Electromagnetism

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 happens when you bring two north poles of magnets close together?

Back

They repel each other.

Front

What happens when you bring a north pole and a south pole of magnets close together?

Back

They attract each other.

Front

What is magnetic force?

Back

Magnetic force is a force exerted by magnets that can be felt by objects near a magnet.

Front

What are the two poles of a magnet called?

Back

North Pole and South Pole.

Front

What do we call materials that are attracted to magnets?

Back

Ferromagnetic materials.

Front

What is the difference between permanent magnets and temporary magnets?

Back

Permanent magnets maintain their magnetism, while temporary magnets only act as magnets when in a magnetic field.

Front

What is the role of electric current in an electromagnet?

Back

Electric current creates a magnetic field around the wire, making it a magnet.

Front

What is the principle of attraction and repulsion in magnets?

Back

Opposite poles attract each other, while like poles repel each other.

Front

How can you increase the strength of an electromagnet?

Back

You can increase the strength by increasing the electric current or adding more coils of wire.