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Explain how an electric motor functions, detailing the role of the split-ring commutator and brushes in its operation

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Cambridge IGCSE PhysicsElectricity and magnetismSupplement content

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Quick explanation

Explain how an electric motor functions, detailing the role of the split-ring commutator and brushes in its operation

  • This point belongs to The d.c. motor, especially The d.c. motor outcomes.
  • You need to be able to explain how an electric motor functions, detailing the role of the split-ring commutator and brushes in its operation.
  • The key ideas to know are Describe, Explain, and Outline.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeExplainOutline

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This objective helps connect The d.c. motor outcomes to exam-style questions, flashcards, and revision notes for The d.c. motor.

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Paper 4 structured question: The d.c. motor

Paper 4Theory (Extended)4 marks

Description

Electric Motor Components

An electric motor consists of a coil, a magnetic field, a split-ring commutator, and brushes. The coil is placed within the magnetic field and is connected to a power source.

  1. a

    Explain the function of the split-ring commutator and brushes in an electric motor.

    Aim for approximately 4 distinct marking points.

    [4]
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