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Learning objective

Recall and apply the formula for resistance, expressed as V = IR.

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

Recall and apply the formula for resistance, expressed as V = IR

  • This point belongs to Electrical quantities, especially Electrical quantities outcomes.
  • You need to be able to recall and apply the formula for resistance, expressed as V = IR.
  • The key ideas to know are Calculate.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

Calculate

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

Circuit Analysis

Calculate the current flowing through the resistor.

  1. a

    Calculate the current using the formula V = IR.

    Aim for approximately 2 distinct marking points.

    [2]
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Cambridge IGCSECombined Science resources