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 and its strength can be controlled.

Front

What happens when you bring the south pole of one magnet close to the north pole of another magnet?

Back

They will attract each other.

Front

What is the role of electric current in magnetism?

Back

Electric current creates a magnetic field around a conductor, which is the principle behind electromagnets.

Front

What is the definition of magnetic force?

Back

Magnetic force is the attraction or repulsion that arises between electrically charged particles due to their motion.

Front

What is a compass and how does it work?

Back

A compass is a navigational instrument that shows direction. Its needle is a small magnet that aligns itself with the Earth's magnetic field, pointing towards the magnetic poles.

Front

What are the two poles of a magnet?

Back

The two poles of a magnet are the north pole and the south pole. Opposite poles attract each other, while like poles repel.

Front

What is the difference between permanent magnets and electromagnets?

Back

Permanent magnets maintain a constant magnetic field, while electromagnets can be turned on and off and their strength can be adjusted.

Front

What is the magnetic south pole?

Back

The magnetic south pole is the point on the Earth's surface where the magnetic field points vertically downwards.

Front

What is current in the context of electricity?

Back

Current is the flow of electric charge through a conductor, measured in amperes.

Front

How does frequency affect the behavior of an electromagnet?

Back

Changing the frequency of the electric current can change the poles of the electromagnet, affecting its attraction or repulsion with other magnets.