An electromagnet is a magnet where the magnetic field is produced by the flow of electric current. When the current is turned off, the magnetic field will disappear. Usually, an electromagnet is a solenoid inside which a soft iron core is placed. This core greatly increases the strength of the magnet.
Increasing the strength of an electromagnet[edit | edit source]
- Increasing the current flowing through the wire
- Increase the number of coils around the soft iron core.