This document describes the basic components and working principle of a DC motor. The key components are a split ring commutator, brushes, armature, and field magnet. The field magnet interacts with the armature to generate an electromotive force (emf) that reverses polarity over time, producing a rotating motion.

5. • Split ring commutator
• Brushes
• Armature
• Field magnet

6. Working principle

8. emf
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