4.7.1.1

4.7.1.1 Poles of a magnet

4.7.1.1 Poles of a magnet

Content

The poles of a magnet are the places where the magnetic forces are strongest. When two magnets are brought close together they exert a force on each other. Two like poles repel each other. Two unlike poles attract each other. Attraction and repulsion between two magnetic poles are examples of non-contact force.

A permanent magnet produces its own magnetic field. An induced magnet is a material that becomes a magnet when it is placed in

a magnetic field. Induced magnetism always causes a force of attraction. When removed from the magnetic field an induced magnet loses most/all of its magnetism quickly.

Students should be able to describe:

the attraction and repulsion between unlike and like poles for permanent magnets

the difference between permanent and induced magnets

Resources

Video

Practicals

Practical

Demo:

Safety

Asthma attack risk for selected student?