Permanent and induced magnets

Question 1

What is an induced magnet?

Answer 1

• Any material that is influenced by a magnetic field and has the potentential of becoming a magnet

Question 2

Common magnetic materials

Answer 2

• Nickel
• Cobalt
• Iron
• Steel (alloy of iron)

Question 3

Permanent vs induced magnets

Answer 3

• Permanent magnet: produce their own magnetic field all of the time
• Induced magnet: only produce their own magnetic field temporarily, when in the field of a permanent magnet

Question 4

Characteristics of induced magnets

Answer 4

• ALWAYS experience an attractive force with the permanent magnet
• The pole in contact to the permanent magnet will be opposite to that of the permanent magnet

Question 5

Hard vs soft magnet

Answer 5

• Soft magnetic material: loses magnetism very quickly
• Hard magnetic material: loses magnetism slowly

Question 6

What is a magnetic field?

Answer 6

• The area around a magnet in which its force of magnetism can be felt