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GCSE Combined Science · key term
A stationary conducting contact that touches the rotating commutator, allowing current to flow between the external circuit and the coil.
Used by AQA
Specification 6.7.2.3 · Paper 6
Revise: Electric Motors (HT Only)Two stationary carbon brushes touch the commutator and connect it to the d.c. supply. The brushes allow electrical contact while the coil rotates.
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