Magnetism

Question 1

What is the name of the naturally magnetic iron ore?

Answer 1

Magnetite

Question 2

What are the lines of force that pass through the space surrounding a magnet called?

Answer 2

Lines of magnetic flux

Question 3

How do the lines of magnetic flux travel?

Answer 3

From the North Pole and re-enter the sound pole

Question 4

What are the types of permanent magnets?

Answer 4

Horseshoe

Bar

Question 5

What happens if 2 like poles are brought close together?

Answer 5

Force of repulsion pushes them apart

Question 6

What happens if 2 un-like poles are brought close together?

Answer 6

There will be a force of attraction, pulling them together

Question 7

List 3 materials that, mixed with steel, will produce stronger magnets

Answer 7

Aluminium

Nickel

Cobalt

Question 8

What is produced around a conductor when a current is passed through it?

Answer 8

Lines of magnetic flux

Question 9

Permanent magnet and electro-magnet are two ways of producing a magnet. Name one more

Answer 9

Stroking a permanent magnet along a magnetic material

Question 10

What are the requirements needed for magnetism to produce a voltage by induction.

Answer 10

An electrical conductor

A magnetic field

Relative movement