Amplify Magnetic Fields Review

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 magnetic force.

Front

What happens when two like poles of magnets are brought together?

Back

They repel each other.

Front

What happens when two opposite poles of magnets are brought together?

Back

They attract each other.

Front

What are magnetic field lines?

Back

Magnetic field lines are imaginary lines that represent the strength and direction of a magnetic field. They emerge from the north pole and enter the south pole of a magnet.

Front

What does it mean if magnetic field lines are close together?

Back

It indicates a strong magnetic field.

Front

What does it mean if magnetic field lines are far apart?

Back

It indicates a weak magnetic field.

Front

What is the rule for determining the direction of magnetic force?

Back

The right-hand rule states that if you point your thumb in the direction of the current, your fingers will curl in the direction of the magnetic field.

Front

What is the significance of the north and south poles of a magnet?

Back

The north pole of a magnet is the pole that points towards the Earth's geographic North when freely suspended. The south pole points towards the Earth's geographic South.

Front

How do magnetic forces affect moving charges?

Back

Magnetic forces can change the direction of moving charges, causing them to move in a circular or spiral path.

Front

What is electromagnetic induction?

Back

Electromagnetic induction is the process of generating an electric current by changing the magnetic field around a conductor.