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Learning objective

Describe how trip switches and fuses work, and select suitable fuse ratings and trip switch settings for protection.

Read the explanation, check the common trap, then practise with flashcards and questions.

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  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE PhysicsElectricity and magnetismCore content

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Quick explanation

Describe how trip switches and fuses work, and select suitable fuse ratings and trip switch settings for protection

  • This point belongs to Electrical safety, especially Electrical safety outcomes.
  • You need to be able to describe how trip switches and fuses work, and select suitable fuse ratings and trip switch settings for protection.
  • The key ideas to know are Explain and Determine.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

ExplainDetermine

Why it matters

This objective helps connect Electrical safety outcomes to exam-style questions, flashcards, and revision notes for Electrical safety.

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Paper 3 structured question: Electrical safety

Paper 3Theory (Core)1 marks

Description

Fuses and Trip Switches

Fuses and trip switches are used in electrical circuits to protect against overloads and faults. Fuses melt to break the circuit, while trip switches can be reset after tripping.

  1. a

    State the function of a fuse.

    Aim for approximately 1 distinct marking point.

    [1]
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