Electrical - Magnetism

Question 1

What is the name of the naturally magnetic iron ore?

Answer 1

Magnetite

Question 2

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

Answer 2

Lines of magnetic flux

Question 3

What direction do the lines of magnetic flux travel?

Answer 3

North to South

Question 4

Name 2 types of commonly used permanent magnets.

Answer 4

1. Bar
2. Horseshoe

Question 5

What happens if 2 like poles are brought close together?

Answer 5

Repel

Question 6

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

Answer 6

Attract

Question 7

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

Answer 7

1. Nickel
2. Aluminium
3. Cobalt

Question 8

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

Answer 8

A magnetic field (lines of magnetic flux)