Physics for IGCSE & O level - Magnets And Currents (Section 2 - No. 9)
What is the purpose of the brushes in a DC motor?
To make contact with the rotating commutator.
To increase the current.
To provide the magnetic field.
To store electrical energy.
Explanation
The brushes are used to maintain electrical contact with the commutator as it rotates, allowing the current to flow into and out of the armature.
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