Electromagnets

Question 1

Electric bell

Answer 1

A device that uses an electromagnet to make sound using a ‘make and break’ circuit.

Question 2

electromagnet

Answer 2

A non-permanent magnet turned on and by controlling the current through it.

Question 3

loudspeaker

Answer 3

A device that uses an electromagnet to make sound from a varying potential difference. Turns an electric signal into a pressure wave of sound.

Question 4

Magnet

Answer 4

magnet A material with a magnetic field around it in which a magnetic material experiences a force.

Question 5

Magnetic field

Answer 5

A region in which there is a force on a magnet or magnetic material.

Question 6

Magnetic field lines

Answer 6

Imaginary lines that show the direction of the force on a magnetic material.

Question 7

Magnetic force

Answer 7

Non-contact force from a magnet on a magnetic material.

Question 8

Magnetic poles

Answer 8

The ends of a magnetic field, called north-seeking and south-seeking poles.

Question 9

Magnetise

Answer 9

To make a material magnetic.

Question 10

Permanent magnet

Answer 10

An object that is magnetic all of the time.

Question 11

Solenoid

Answer 11

Wire wound into a tight coil, part of an electromagnet.