6.3 describe the properties of magnetically hard and soft materials
Magnetically hard materials:
- Needs time to become magnetized
- Once magnetized, the magnetism remains permanently
- Magnets with magnetically hard materials are known as permanent magnets
Eg: Steel
Magnetically soft materials:
- Easily gets magnetized
- Loses its magnetism easily
- Magnets with magnetically soft materials are known as temporary magnets
Eg: Iron