Physics 7: Magnets Flashcards
1
Q
What is the difference between an induced magnet vs a permanent magnet
A
Induced - metal which only magnetic when its around another magnet or rubbing paper clip
Permanent - normal magnets with a north and south
2
Q
Factors affecting the magnetic field of a wire
A
- Strength of the current
- Increasing number of coils
- Length of wire
- Cross sectional area of the wire
- Iron core present
