Magnetic Materials can be ‘Soft’ or ‘Hard’ Flashcards
1
Q
What does it mean if a magnetic material is considered ‘soft’?
A
It loses its induced magnetism quickly
2
Q
What does it mean if a magnetic material is considered ‘hard’?
A
It keeps its induced magnetism permanently
3
Q
What is an example of a soft magnetic material?
A
Iron
4
Q
What is an example of a hard magnetic material?
A
Steel
5
Q
Why is iron used in transformers?
A
Because of this property - it needs to magnetise and demagnetise 50 times a second
6
Q
How can you increase the strength of the magnetic field around a solenoid?
A
By adding a magnetically ‘soft’ Iron core through the middle of the coil
7
Q
Look at the diagram page 60
A
Ok
