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Recognize that the induced electromotive force (e.m.f.) acts in opposition to the change that produces it.

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Cambridge IGCSE PhysicsElectricity and magnetismSupplement content

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Recognize that the induced electromotive force (e.m.f.) acts in opposition to the change that produces it

  • This point belongs to Electromagnetic induction, especially Electromagnetic induction outcomes.
  • You need to be able to recognize that the induced electromotive force (e.m.f.) acts in opposition to the change that produces it.
  • The key ideas to know are Know and Understand.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

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KnowUnderstand

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

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Paper 4 structured question: Electromagnetic induction

Paper 4Theory (Extended)1 marks

Description

Induced e.m.f. Experiment

A coil of wire is placed in a changing magnetic field. As the magnetic field strength increases, an e.m.f. is induced in the coil.

  1. a

    State the direction of the induced e.m.f. when the magnetic field strength is increasing.

    Aim for approximately 1 distinct marking point.

    [1]
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