ELECTROMAGNETISM
2 marks · EasyThe diagram shows a bar magnet and an iron paperclip nearby.
Explain what is meant by induced magnetism in the paperclip.
Explain why the paperclip will not remain magnetised once removed from the field.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) Induced magnetism means the paperclip becomes a magnet while in the magnetic field.
(b) Iron is a soft magnetic material so the magnetism is lost after the field is removed.
Common mistakes: Saying the clip is permanently magnetised.
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · 1 mark for basic definition of induced magnetism.
B1 (b) · 1 mark · 1 mark for stating the temporary nature of induced magnetism in iron/soft materials.
Worked solution
a) Induced magnetism is when a magnetic material (the paperclip) becomes magnetised due to an external magnetic field. b) The paperclip is made from iron, a magnetically soft material, so the induced magnetism is temporary and disappears when removed from the field.