Magnetism

Question 1

What is the name of the naturally magnetic iron ore?

Answer 1

Magnetite

Question 2

There are the lines of the force that pass through the space surrounding a magnet, what are these lines called?

Answer 2

The magnetic field

Question 3

What direction do the lines of magnetic flux travel?

Answer 3

Repel one another and never cross

Question 4

Name 2 types of commonly used permanent magnets.

Answer 4

Horseshoe
Bar

Question 5

What happens if 2 like poles are brought close together?

Answer 5

They will repel

Question 6

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

Answer 6

They will attract

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-magnetic are two ways of producing a magnet. Name one more.

Answer 9

Magnetic induction

Question 10

There are 3 requirements needed for magnetism to produce a voltage by induction. List them.

Answer 10

Conductor
Magnetic field
Relative movement