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GCSE Physics · key term
A device that uses forces on current-carrying conductors in a magnetic field to transfer electrical energy into kinetic energy.
Used by AQA, Edexcel and OCR
Specification 4.7.2.3 · Paper 2
A device that uses the force on a current-carrying coil in a magnetic field to produce rotation.
Revise: Electric motorsIn an electric motor, the wire is formed into a coil mounted so that it can turn about an axle. The coil sits between magnetic poles, where the field runs from north to south. Current flows in opposite directions along the two sides of the coil.
Specification 10.32, 12.14P · Paper 2
A device that transfers energy supplied electrically into movement.
Revise: Domestic Energy TransfersAn electric motor transfers energy supplied electrically to the kinetic energy store of its moving parts. In a battery-powered electric toothbrush, the motor moves the brush head. In a mains-powered washing machine, a motor turns the drum.
A device that uses the motor effect to convert electrical energy into rotational movement.
Specification P4.2d · Paper 1 (Foundation), Paper 3 (Higher)
Revise: Electric motorsAn electric motor places a current-carrying coil between magnetic poles and allows it to rotate about an axle. Current travels in opposite directions through the two sides of the coil that lie in the magnetic field. Fleming's left-hand rule therefore gives opposite force directions: one side is pushed upwards while the other is pushed downwards.
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