Physics 7: Magnets

Question 1

What is the difference between an induced magnet vs a permanent magnet

Answer 1

Induced - metal which only magnetic when its around another magnet or rubbing paper clip

Permanent - normal magnets with a north and south

Question 2

Factors affecting the magnetic field of a wire

Answer 2

1. Strength of the current
2. Increasing number of coils
3. Length of wire
4. Cross sectional area of the wire
5. Iron core present