plumiI-V graphs for components: Edexcel International A Level Physics questions
Edexcel International A Level Physics past-paper questions on 2.4.1.5 I-V graphs for components, 2019–2025, with mark schemes and examiner’s reports where available.
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Q15(a)
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All 23 questions on I-V graphs for components, as a list
- January 2025, AS Unit 2, Q15(a) (4 marks): The student adjusted the variable resistor and recorded corresponding values of current and potential difference for the lamp. The graph shows the results. 0.60
- January 2025, Unit 6, Q2(a) (2 marks): Complete the circuit diagram for the circuit the student could use in this investigation. (2)
- October 2024, AS Unit 2, Q14(a) (3 marks): Draw a circuit diagram the student could use for this investigation. (3)
- October 2024, AS Unit 2, Q14(c) (2 marks): The student increased the p.d. across the LED from 0 V to 2.4 V. Describe, without further calculations, how the resistance of the LED changed. (2)
- October 2024, AS Unit 3, Q2(a)(i) (2 marks): Complete the diagram to show the circuit the student should use for this investigation. (2) X Y R sealed box
- October 2024, AS Unit 3, Q2(a)(ii) (3 marks): The student was told that the sealed box contained a diode. Explain why the resistor R is needed in the circuit. (3)
- October 2024, AS Unit 3, Q2(b) (2 marks): The student plotted the graph below. Current / mA 200 150 100 50 0 Potential difference / V 0 –1 –5 –4 –3 –2 1 2 3 4 5 –50 –100 –150 –200 The sealed box contain
- October 2023, AS Unit 2, Q2 (1 mark): The current-potential difference (p.d.) graph for a diode is shown. Current 0 0.7 V p.d. Which of the following statements is correct for this diode? A This dio
- June 2023, AS Unit 2, Q16(a) (3 marks): Determine the minimum potential difference for which the headlight will emit light. (3) Minimum potential difference = V
- June 2023, AS Unit 2, Q16(b)(ii) (3 marks): A student writes the following statement. When connected to the 12.0 V battery, the combined resistance of two headlights in parallel is one quarter of the comb
- January 2023, AS Unit 2, Q1 (1 mark): The graph shows how current I varies with potential difference V for an electrical component. I V Which component is represented by the graph? A diode B filamen
- October 2022, AS Unit 2, Q5 (1 mark): The graphs show how current I varies with potential difference V for three components. I I I V V V Which of the following components is not represented by any o
- June 2022, AS Unit 2, Q13(a) (2 marks): Complete the sketch graph to show how current varies with potential difference for a filament bulb. (2) I V
- January 2022, AS Unit 2, Q8 (1 mark): The graph shows how current I varies with potential difference V for an electrical component. I V Which component is represented by this graph? A Diode B Filame
- October 2021, AS Unit 2, Q1 (1 mark): The graph shows how potential difference V varies with current I for an electrical component. V I Which electrical component is represented by this graph? A dio
- June 2021, AS Unit 2, Q6 (1 mark): A graph of current against potential difference for an electrical component is shown. I V Which component would give this graph? A diode B filament bulb C ohmic
- January 2021, AS Unit 2, Q16 (6 marks): *16 The graphs show how current I varies with potential difference V for a filament bulb and for a negative temperature coefficient thermistor. I I V V Filament
- October 2020, AS Unit 2, Q6 (1 mark): Which electrical component has the current-potential difference graph shown? I V A diode B filament lamp C resistor D thermistor
- October 2020, AS Unit 2, Q18(c) (4 marks): If the resistors in the circuit used in (a) were replaced with filament lamps, the resistance of each lamp would be different depending on the potential differe
- January 2020, AS Unit 2, Q4 (1 mark): The current‑potential difference graph for an ideal diode is shown. The graph has been labelled at three separate points by the letters X, Y and Z. Current Z X
- January 2020, AS Unit 3, Q1(a) (4 marks): Draw a labelled diagram showing how she could carry out this investigation using school laboratory apparatus. (4)
- January 2020, Unit 4, Q17(b) (3 marks): In practice, the resistance of the LED does not stay constant. The graph shows how current varies with potential difference (p.d.) for the LED. current 0 1.4 V
- June 2019, AS Unit 2, Q5 (1 mark): Which of the following graphs shows how current I varies with potential difference V for a negative temperature coefficient thermistor? I A V I B V I C V I D V
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