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Learning objective

Define electric current as the amount of charge that passes a specific point in a given time; remember and apply the formula Q = I t.

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 magnetismSupplement content

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Quick explanation

Define electric current as the amount of charge that passes a specific point in a given time; remember and apply the formula Q = I t

  • This point belongs to Electric current, especially Electric current outcomes.
  • You need to be able to define electric current as the amount of charge that passes a specific point in a given time; remember and apply the formula Q = I t.
  • The key ideas to know are Define, Recall, and Use.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DefineRecallUse

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

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Paper 4 structured question: Electric current

Paper 4Theory (Extended)1 marks

Description

Electric Current Calculation

A circuit has a current of 4 A flowing for 5 seconds. Calculate the total charge that passes through a point in the circuit during this time.

  1. a

    State the formula used to calculate charge.

    Aim for approximately 1 distinct marking point.

    [1]
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