Magnets and Electromagnets

Front

What is a magnet?

Back

A magnet is an object that produces a magnetic field, attracting certain metals like iron and producing a force on other magnets.

Front

What is an electromagnet?

Back

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

Front

What happens when like poles of magnets are brought together?

Back

Like poles repel each other.

Front

What happens when opposite poles of magnets are brought together?

Back

Opposite poles attract each other.

Front

What is the magnetic field?

Back

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

Front

How can the strength of an electromagnet be changed?

Back

The strength of an electromagnet can be changed by increasing the electric current or by changing the number of coils of wire.

Front

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

Back

A permanent magnet is always magnetized, while an electromagnet can be turned on and off.

Front

What is magnetic polarity?

Back

Magnetic polarity refers to the direction of the magnetic field, which has a north and south pole.

Front

What materials are typically attracted to magnets?

Back

Materials like iron, nickel, and cobalt are typically attracted to magnets.

Front

What is a magnetic pole?

Back

A magnetic pole is one of the two ends of a magnet where the magnetic force is strongest.