BRAINCAKEAn Electric Motor
An electric motor is a coil of insulated wire in a magnetic field with a direct current passing through it. The forces on each edge of the coil are in opposite directions and make the coil spin continuously.
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Key terms in this lesson
- split-ring commutator
- A device on the coil of a d.c. motor that reverses the current direction every half turn, keeping the coil turning the same way.
More in Magnetic Fields
- Magnetic Field
- Force on a current-carrying wire
- Magnetic Flux density
- Couple on a coil in a magnetic field
- Force on a moving Charge in a Magnetic Field
- Cyclotron
- The Mass Spectrometer
All 8 lessons in Magnetic Fields · All Edexcel A-level Physics topics