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Learning objective

Create and understand circuit diagrams that include cells, batteries, power supplies, generators, potential dividers, switches, resistors (both fixed and variable), heaters, thermistors (only NTC), light-dependent resistors (LDRs), lamps, motors, bells, ammeters, voltmeters, magnetising coils, transformers, fuses, and relays, and be aware of the behavior of these components within a circuit.

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

Exam focus

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

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Quick explanation

Create and understand circuit diagrams that include cells, batteries, power supplies, generators, potential dividers, switches, resistors (both fixed and variable), heaters, thermistors (only NTC), light-dependent resistors (LDRs), lamps, motors, bells, ammeters, voltmeters, magnetising coils, transformers, fuses, and relays, and be aware of the behavior of these components within a circuit

  • This point belongs to Circuit diagrams and circuit components, especially Circuit diagrams and circuit components outcomes.
  • You need to be able to create and understand circuit diagrams that include cells, batteries, power supplies, generators, potential dividers, switches, resistors (both fixed and variable), heaters, thermistors (only NTC), light-dependent resistors (LDRs), lamps, motors, bells, ammeters, voltmeters, magnetising coils, transformers, fuses, and relays, and be aware of the behavior of these components within a circuit.
  • The key ideas to know are Describe, Identify, and Explain.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeIdentifyExplainSketch

Why it matters

This objective helps connect Circuit diagrams and circuit components outcomes to exam-style questions, flashcards, and revision notes for Circuit diagrams and circuit components.

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Practice Questions7 linked questions

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Paper 3 structured question: Circuit diagrams and circuit components

Paper 3Theory (Core)1 marks

Description

Circuit Components

A circuit includes a battery, a switch, a resistor, and a lamp. The battery provides power, the switch controls the circuit, the resistor limits current, and the lamp converts electrical energy to light.

  1. a

    State the function of the switch in the circuit.

    Aim for approximately 1 distinct marking point.

    [1]
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