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The electric motor converts electrical energy into kinetic energy using the motor effect. In this lesson you will learn how a simple DC motor works, the role of the split-ring commutator, and how to increase the speed of a motor. This is Higher tier content from AQA GCSE Physics specification 4.7.2.
A simple DC motor consists of:
graph TD
subgraph "Simple DC Motor"
PS["DC Power Supply"] --> B1["Carbon Brush (left)"]
B1 --> SR["Split-Ring Commutator"]
SR --> COIL["Rectangular Coil (rotates between magnets)"]
COIL --> SR
SR --> B2["Carbon Brush (right)"]
B2 --> PS
N["N pole (left magnet)"] -.->|"Magnetic field"| S["S pole (right magnet)"]
end
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