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Analogue and digital signals: AQA A‑Level Physics questions

Every AQA A-Level Physics exam question on 3.13.2 Analogue and digital signals, 2016–2025, with its mark scheme and examiner’s report.

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2,714 questions

  1. Q03.1

    November 2020 · Paper 3 Electronics

    2 marks3.13.2 Analogue and digital signals
    The whole paper ↗
    November 2020 Paper 3 Electronics, question 03.1: Explain why the sampling frequency used is suitable for this task. [2 marks]

  2. Q03.2

    November 2020 · Paper 3 Electronics

    1 mark3.13.2 Analogue and digital signals
    Mark scheme (PDF)
    The whole paper ↗
    November 2020 Paper 3 Electronics, question 03.2: Calculate the number of quantisation levels available on a 16-bit encoding system. [1 mark] number of quantisation levels =

  3. Q03.3

    November 2020 · Paper 3 Electronics

    2 marks3.13.2 Analogue and digital signals
    The whole paper ↗
    November 2020 Paper 3 Electronics, question 03.3: A recorded piece of stereo music lasts for 3.5 minutes. Calculate the size, in megabytes, of the digital file needed to store this recording. [2 marks] file siz

  4. Q03.4

    November 2020 · Paper 3 Electronics

    2 marks3.13.2 Analogue and digital signals
    The whole paper ↗
    November 2020 Paper 3 Electronics, question 03.4: The music file is used by a call centre to play as background music while a phone call is on hold. However, the telephone network is designed to use a bandwidth

  5. Q05

    June 2018 · Paper 3 Electronics

    6 marks3.13.2 Analogue and digital signals
    The whole paper ↗
    June 2018 Paper 3 Electronics, question 05: In a recording studio the output from a microphone is an analogue signal. The equipment in the studio converts this analogue signal into a digital signal before
All 5 questions on Analogue and digital signals, as a list
  1. November 2020, Paper 3 Electronics, Q03.1 (2 marks): Explain why the sampling frequency used is suitable for this task. [2 marks]
  2. November 2020, Paper 3 Electronics, Q03.2 (1 mark): Calculate the number of quantisation levels available on a 16-bit encoding system. [1 mark] number of quantisation levels =
  3. November 2020, Paper 3 Electronics, Q03.3 (2 marks): A recorded piece of stereo music lasts for 3.5 minutes. Calculate the size, in megabytes, of the digital file needed to store this recording. [2 marks] file siz
  4. November 2020, Paper 3 Electronics, Q03.4 (2 marks): The music file is used by a call centre to play as background music while a phone call is on hold. However, the telephone network is designed to use a bandwidth
  5. June 2018, Paper 3 Electronics, Q05 (6 marks): In a recording studio the output from a microphone is an analogue signal. The equipment in the studio converts this analogue signal into a digital signal before

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