Magnetic Fields Chapter 1

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 field lines that show the direction and strength of the magnetic force.

Front

What do magnetic field lines indicate?

Back

Magnetic field lines indicate the direction of the magnetic force. They point from the north pole of a magnet to the south pole.

Front

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

Back

They attract each other.

Front

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

Back

They repel each other.

Front

What is the rule for magnetic poles?

Back

Opposite poles attract (north to south), and like poles repel (north to north or south to south).

Front

How can you visualize a magnetic field?

Back

You can visualize a magnetic field using iron filings sprinkled around a magnet. The filings align along the field lines, showing the shape and direction of the magnetic field.

Front

What is the relationship between electric currents and magnetic fields?

Back

An electric current flowing through a wire creates a magnetic field around the wire.

Front

What is the right-hand rule in magnetism?

Back

The right-hand rule is a method to determine the direction of the magnetic field around a current-carrying wire. If you point your thumb in the direction of the current, your fingers curl in the direction of the magnetic field.

Front

What is a magnetic domain?

Back

A magnetic domain is a region within a magnetic material where the magnetic moments of atoms are aligned in the same direction.

Front

What is the effect of temperature on magnetism?

Back

Increasing temperature can cause a material to lose its magnetism, a phenomenon known as thermal demagnetization.