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Learning objective

Recognize that in metals, electric current is due to the flow of electrons.

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

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Exam focus

  • Read the explanation.
  • Check key terms.
  • Practise with linked questions.
Cambridge IGCSE Combined ScienceElectricityCore content

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Quick explanation

Recognize that in metals, electric current is due to the flow of electrons

  • This point belongs to Electrical quantities, especially Electrical quantities outcomes.
  • You need to be able to recognize that in metals, electric current is due to the flow of electrons.
  • The key ideas to know are State.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

State

Why it matters

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

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Paper 3 structured question: Electrical quantities

Paper 3Theory (Core)2 marks

Description

Electric Current in Metals

In metals, electric current is caused by the flow of electrons when a potential difference is applied across the conductor.

  1. a

    Explain how electric current is generated in metals.

    Aim for approximately 2 distinct marking points.

    [2]
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Cambridge IGCSECombined Science resources