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Learning objective

Explain the basic design of an alternating current (a.c.) generator, including the roles of a rotating coil or magnet, and the function of slip rings and brushes when applicable.

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Cambridge IGCSE PhysicsElectricity and magnetismSupplement content

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Quick explanation

Explain the basic design of an alternating current (a.c.) generator, including the roles of a rotating coil or magnet, and the function of slip rings and brushes when applicable

  • This point belongs to The a.c. generator, especially The a.c. generator outcomes.
  • You need to be able to explain the basic design of an alternating current (a.c.) generator, including the roles of a rotating coil or magnet, and the function of slip rings and brushes when applicable.
  • The key ideas to know are Describe, Explain, and Identify.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeExplainIdentify

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

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Paper 4 structured question: The a.c. generator

Paper 4Theory (Extended)1 marks

Description

Components of an A.C. Generator

The generator has a rotating coil that induces voltage as it moves through a magnetic field. Slip rings and brushes are used to transfer the generated current to an external circuit.

  1. a

    State the purpose of slip rings in an a.c. generator.

    Aim for approximately 1 distinct marking point.

    [1]
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