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Learning objective

Calculate the total resistance when two or more resistors are connected in series.

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

Calculate the total resistance when two or more resistors are connected in series

  • This point belongs to Series and parallel circuits, especially Series and parallel circuits outcomes.
  • You need to be able to calculate the total resistance when two or more resistors are connected in series.
  • The key ideas to know are Calculate and Determine.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

CalculateDetermine

Why it matters

This objective helps connect Series and parallel circuits outcomes to exam-style questions, flashcards, and revision notes for Series and parallel circuits.

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Paper 3 structured question: Series and parallel circuits

Paper 3Theory (Core)2 marks

Description

Series Circuit Resistors

A circuit contains three resistors connected in series: R1 = 2Ω, R2 = 3Ω, and R3 = 5Ω.

  1. a

    Calculate the total resistance of the circuit.

    Aim for approximately 2 distinct marking points.

    [2]
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