Magnetic Fields

Front

What is a magnetic field?

Back

A magnetic field is a region around a magnet where magnetic forces can be detected. It is represented by magnetic field lines that show the direction and strength of the field.

Front

How can the direction of a magnetic field be demonstrated?

Back

The direction of a magnetic field can be demonstrated using a compass, which aligns itself with the magnetic field lines.

Front

What happens when a permanent magnet is brought close to an induced magnet?

Back

The force between a permanent magnet and an induced magnet is always attractive.

Front

Where is the magnetic field strongest around a bar magnet?

Back

The magnetic field is strongest at the poles of the bar magnet.

Front

What are the two types of magnetic poles?

Back

The two types of magnetic poles are north poles and south poles.

Front

What do magnetic field lines represent?

Back

Magnetic field lines represent the strength and direction of a magnetic field. The closer the lines, the stronger the field.

Front

What is the rule for the direction of magnetic field lines?

Back

Magnetic field lines always point from the north pole to the south pole.

Front

Can magnetic fields be created by electric currents?

Back

Yes, magnetic fields can be created by electric currents flowing through a conductor.

Front

What is an induced magnet?

Back

An induced magnet is a material that becomes magnetized when it is placed in a magnetic field.

Front

What is the difference between permanent magnets and temporary magnets?

Back

Permanent magnets maintain their magnetism over time, while temporary magnets lose their magnetism when removed from a magnetic field.