P4.1 Magnets And Magnetic Fields

Question 1

What is the direction of the magnetic field?

Answer 1

From the North to the South Pole

Question 2

What does the distance between magnetic field lines represent?

Answer 2

Closer together = stronger

Further apart = weaker

Question 3

What is magnetic flux density?

Answer 3

Represented by field lines
The number of field lines passing through a particular area
Same as magnetic field strength

Question 4

Differences between permanent and induced magnets

Answer 4

Permanent - always magnetic, domains all line up

Induced - only magnetic when it is in another magnetic field, domains line up when in a field

Question 5

What are domains

Answer 5

Small magnetic regions inside a magnet

Question 6

Which way do compasses point?

Answer 6

Towards the magnetic North Pole(geographical South Pole)