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Capacitors: OCR A‑Level Physics A questions

Every OCR A-Level Physics A exam question on 6.1.1 Capacitors, 2016–2025, with its mark scheme and examiner’s report.

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Calculations

1,877 questions

  1. Q4(b)(ii)

    June 2025 · Paper 3

    4 marks6.1.1 Capacitors
    The whole paper ↗
    June 2025 Paper 3, question 4(b)(ii): The capacitance of the electroscope is 20 pF. Estimate the number of electrons stored on the electroscope when the deflection angle is 45°. number of electrons

  2. Q4

    June 2024 · Paper 2

    1 mark6.1.1 Capacitors
    The whole paper ↗
    June 2024 Paper 2, question 4: Three capacitors are arranged in a circuit. 0.33 μF 0.22 μF X Y 0.47 μF The capacitance of each capacitor is shown. What is the total capacitance between X and

  3. Q22(a)(v)

    June 2024 · Paper 2

    2 marks6.1.1 Capacitors
    The whole paper ↗
    June 2024 Paper 2, question 22(a)(v): Calculate the magnitude of the charge Q on one of the plates of the model capacitor. Q = C [2]

  4. Q20(b)

    June 2023 · Paper 2

    1 mark6.1.1 Capacitors
    The whole paper ↗
    June 2023 Paper 2, question 20(b): Calculate the charge Q stored on the capacitor when it is fully charged. Q = C [1]

  5. Q5(a)(ii)

    June 2023 · Paper 3

    1 mark6.1.1 Capacitors
    The whole paper ↗
    June 2023 Paper 3, question 5(a)(ii): Explain why the individual capacitors in the network should be connected in parallel in order to produce this total capacitance. [1]

  6. Q2(a)

    November 2020 · Paper 3

    2 marks6.1.1 Capacitors
    The whole paper ↗
    November 2020 Paper 3, question 2(a): Show that V = E. C + C0 [2]

  7. Q2(b)(i)

    November 2020 · Paper 3

    1 mark6.1.1 Capacitors
    The whole paper ↗
    November 2020 Paper 3, question 2(b)(i): Use the expression in (a) to show that the graph should be a straight line of gradient C0E and y-intercept 1 1 E . [1] Question 2 continues on page 6

  8. Q2(b)(ii)

    November 2020 · Paper 3

    2 marks6.1.1 Capacitors
    The whole paper ↗
    November 2020 Paper 3, question 2(b)(ii): The data points, error bars and the line of best fit drawn by the student are shown in the graph below. 0.28 0.26 1 / V –1 V 0.24 0.22 0.20 0.18 0.16 0.14 0.5 1

  9. Q2(b)(iii)

    November 2020 · Paper 3

    4 marks6.1.1 Capacitors2.2.1 Measurements and uncertainties
    The whole paper ↗
    November 2020 Paper 3, question 2(b)(iii): Draw on the graph a straight line of worst fit. Use this line to determine the absolute uncertainty in your value of C0. Write your answer to an appropriate num

  10. Q21(b)(i)

    June 2017 · Paper 2

    2 marks6.1.1 Capacitors
    The whole paper ↗
    June 2017 Paper 2, question 21(b)(i): Calculate the total capacitance C in the circuit. C = μF [2]
All 10 questions on Capacitors, as a list
  1. June 2025, Paper 3, Q4(b)(ii) (4 marks): The capacitance of the electroscope is 20 pF. Estimate the number of electrons stored on the electroscope when the deflection angle is 45°. number of electrons
  2. June 2024, Paper 2, Q4 (1 mark): Three capacitors are arranged in a circuit. 0.33 μF 0.22 μF X Y 0.47 μF The capacitance of each capacitor is shown. What is the total capacitance between X and
  3. June 2024, Paper 2, Q22(a)(v) (2 marks): Calculate the magnitude of the charge Q on one of the plates of the model capacitor. Q = C [2]
  4. June 2023, Paper 2, Q20(b) (1 mark): Calculate the charge Q stored on the capacitor when it is fully charged. Q = C [1]
  5. June 2023, Paper 3, Q5(a)(ii) (1 mark): Explain why the individual capacitors in the network should be connected in parallel in order to produce this total capacitance. [1]
  6. November 2020, Paper 3, Q2(a) (2 marks): Show that V = E. C + C0 [2]
  7. November 2020, Paper 3, Q2(b)(i) (1 mark): Use the expression in (a) to show that the graph should be a straight line of gradient C0E and y-intercept 1 1 E . [1] Question 2 continues on page 6
  8. November 2020, Paper 3, Q2(b)(ii) (2 marks): The data points, error bars and the line of best fit drawn by the student are shown in the graph below. 0.28 0.26 1 / V –1 V 0.24 0.22 0.20 0.18 0.16 0.14 0.5 1
  9. November 2020, Paper 3, Q2(b)(iii) (4 marks): Draw on the graph a straight line of worst fit. Use this line to determine the absolute uncertainty in your value of C0. Write your answer to an appropriate num
  10. June 2017, Paper 2, Q21(b)(i) (2 marks): Calculate the total capacitance C in the circuit. C = μF [2]

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