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The d.c. motor
Understand that a coil carrying an electric current within a magnetic field can experience a rotational force, which can be enhanced by increasing: (a) the number of coil turns (b) the electric current (c) the magnetic field strength
2
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20
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14
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88 min
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CambridgeIGCSEPhysicsElectricity and magnetism
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The d.c. motor outcomes2 objectives
- Understand that a coil carrying an electric current within a magnetic field can experience a rotational force, which can be enhanced by increasing: (a) the number of coil turns (b) the electric current (c) the magnetic field strength
- Explain how an electric motor functions, detailing the role of the split-ring commutator and brushes in its operation
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