An electromagnet is a type of magnet in which the magnetic field is produced by the flow of electric current. In GCSE Physics, students learn that electromagnets consist of a coil of wire, often wound around an iron core, which becomes magnetised only when electrical current flows through the wire.
The strength of the magnetic field can be increased by adding more turns to the coil or by increasing the current. Unlike permanent magnets, electromagnets can be turned on and off, making them useful in various applications such as electric motors, relays, and magnetic cranes.
Their ability to control the strength and presence of magnetism makes them integral to modern technology and industrial processes.
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