GCSE Physics: Magnetism

Front

What is a magnetic field?

Back

A region around a magnet where magnetic forces can be detected; represented by field lines.

Front

What do magnetic field lines represent?

Back

Imaginary lines that represent the direction and strength of a magnetic field; closer lines indicate a stronger field.

Front

What is the North Pole of a magnet?

Back

The end of a magnet that points towards the Earth's geographic North Pole when freely suspended.

Front

What is the South Pole of a magnet?

Back

The end of a magnet that points towards the Earth's geographic South Pole when freely suspended.

Front

What is a permanent magnet?

Back

A material that maintains a constant magnetic field without the need for an external power source.

Front

What is an induced magnet?

Back

A material that becomes a magnet when placed in a magnetic field but loses its magnetism when the field is removed.

Front

What is an electromagnet?

Back

A type of magnet whose magnetic field is produced by the flow of electric current; can be turned on and off.

Front

What is the right-hand grip rule?

Back

A method to determine the direction of the magnetic field around a current-carrying wire; thumb points in the direction of current, fingers curl in the direction of the field.

Front

What is Fleming's left-hand rule?

Back

A rule to predict the direction of force in a motor; thumb represents force, first finger represents magnetic field, second finger represents current.

Front

What is the motor effect?

Back

The phenomenon where a current-carrying conductor placed in a magnetic field experiences a force.