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 magnetic force.

Front

What happens when a north pole and a south pole of magnets are brought together?

Back

They attract each other.

Front

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

Back

They repel each other.

Front

What is potential energy in the context of magnets?

Back

Potential energy in magnets refers to the energy stored due to the position of the magnets relative to each other, which can be converted to kinetic energy when they move.

Front

How can magnets cause objects to have kinetic energy?

Back

A magnetic force can convert potential energy stored in a magnetic field to kinetic energy.

Front

What is the direction of magnetic field lines around a magnet?

Back

Magnetic field lines emerge from the north pole and enter the south pole.

Front

What is the relationship between magnetic fields and electric currents?

Back

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

Front

What is the principle of magnetic attraction and repulsion?

Back

Magnets attract opposite poles (north and south) and repel like poles (north-north or south-south).

Front

What is the effect of distance on magnetic force?

Back

The strength of the magnetic force decreases as the distance between the magnets increases.

Front

What is a permanent magnet?

Back

A permanent magnet is a material that maintains a persistent magnetic field without the need for an external power source.