Physics Course/Magnet/Permanent ElectroMagnet
Permanent Electromagnetic Magnet
A permanent magnet is an electromagnetic that does not lose its magnetic field when the current is zero
Permanent Electromagnet Properties
- A magnet has two "poles" namely north pole and south pole.
- The magnetic field is made up of magnetic field lines that travels from north pole to south pole
- The magnetic field Strength is the product of the coil's inductance and current. B = L I
- Magnet of same poles repel; different poles attract