Skip to content

Course home

Simple phenomena of magnetism

Simple phenomena of magnetism

EasyMedium
1234567891011121314151617181920
Question 8

Three methods are suggested to demagnetise a strong permanent bar magnet:

  1. Heating the magnet until it is red hot and letting it cool while oriented in an east-west direction.
  2. Placing the magnet inside a coil carrying a large alternating current (a.c.) and slowly withdrawing it.
  3. Hammering the magnet repeatedly while it is aligned in a north-south direction.

Which of these methods will successfully demagnetise the magnet?

A

111, 222 and 333

B

111 and 222 only

C

111 and 333 only

D

222 and 333 only

Markscheme

Simple phenomena of magnetism Questions

  1. IGCSE
  2. /Physics
  3. /Simple phenomena of magnetism

169 exam-style questions on CIE IGCSE Physics Simple phenomena of magnetism, covering Simple phenomena of magnetism. Each one has a worked solution and a mark scheme showing where the marks go.

Question bank