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Cambridge IGCSE Combined Science practice

What is a common use of alternating current?

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Show answerElectrical quantities revisionRevise the key idea

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MCQ

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cambridge_mcq

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Electrical quantities

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What is a common use of alternating current?.

  1. A.Charging batteries
  2. B.Powering electronic devices
  3. C.Household electricity supply
  4. D.Low-voltage applications

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Paper 3 structured question: Electrical quantities

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Description

Direct Current vs Alternating Current

Direct current (d.c.) flows in one direction, while alternating current (a.c.) changes direction periodically. D.c. is used in batteries, whereas a.c. is used in power supplies.

  1. a

    Compare the characteristics of direct current and alternating current.

    Aim for approximately 3 distinct marking points.

    [3]