BRAINCAKECouple on a coil in a magnetic field
If a current carrying coil is placed in a magnetic field a pair of forces act on the sides of the coil. The force on each side is in the opposite direction and forms a couple. As a result, the coil rotates.
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Key terms in this lesson
- field line
- A line showing the direction of the force that would act on a small test mass or charge placed at that point in a field.
- magnetic field
- A region of space in which a moving charge, current-carrying conductor or magnetic material experiences a force.
More in Magnetic Fields
- Magnetic Field
- Force on a current-carrying wire
- Magnetic Flux density
- An Electric Motor
- Force on a moving Charge in a Magnetic Field
- Cyclotron
- The Mass Spectrometer
All 8 lessons in Magnetic Fields · All OCR A-level Physics topics