plumiResistance and temperature: metals and NTC thermistors: Edexcel International A Level Physics questions
Edexcel International A Level Physics past-paper questions on 2.4.5.1 Resistance and temperature: metals and NTC thermistors, 2019–2025, with mark schemes and examiner’s reports where available.
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All 30 questions on Resistance and temperature: metals and NTC thermistors, as a list
- June 2025, AS Unit 2, Q6 (1 mark): A negative temperature coefficient thermistor is connected in a circuit, as shown. A V The temperature of the thermistor is increased. Which row of the table gi
- January 2025, AS Unit 2, Q5 (1 mark): The circuit shown includes a thermistor. A Which of the following explains the change in the ammeter reading as the temperature of the thermistor decreases? A
- January 2025, AS Unit 2, Q13(a) (3 marks): Explain how the resistance of the wire changes as the temperature of the wire increases. (3)
- October 2024, AS Unit 2, Q5 (1 mark): A current in a wire causes the temperature of the wire to increase. Which row of the table describes the changes to the wire as the temperature increases? Ampli
- October 2024, AS Unit 2, Q6 (1 mark): The circuit shown includes a thermistor. A V The temperature of the thermistor increases. Which row of the table shows how the readings on the ammeter and voltm
- October 2024, Unit 5, Q16 (6 marks): The diagram shows some equipment that could be used to calibrate a thermistor. ohmmeter thermistor beaker of water tripod Describe a method a student could use
- June 2024, AS Unit 2, Q1 (1 mark): The temperature of a thermistor and the temperature of a metal wire are increased. Which row of the table gives the changes in resistance of the thermistor and
- January 2024, AS Unit 2, Q18(b)(i) (2 marks): Explain why the resistance of a thermistor decreases as the temperature increases. (2)
- January 2024, AS Unit 2, Q18(b)(ii) (5 marks): The student increased the temperature of both the wire resistor and the thermistor from 80 °C to 90 °C. Explain why the current in the circuit decreased. (5)
- October 2023, AS Unit 2, Q14(a) (6 marks): Deduce whether this circuit would switch on the heater when the temperature falls below 10 °C. You should include a calculation of the p.d. across the thermisto
- October 2023, AS Unit 2, Q14(b) (2 marks): Explain why the resistance of the thermistor changes with temperature. (2)
- October 2023, Unit 5, Q15 (6 marks): * 15 A student is planning an experiment to investigate how the resistance of a thermistor changes with temperature. The student wants to use the temperature ra
- June 2023, AS Unit 2, Q10 (1 mark): As the temperature of the filament in a bulb decreases, the resistance of the filament changes. Which of the following is the reason for this change in resistan
- January 2023, AS Unit 2, Q14(b) (4 marks): The student decreases the temperature of the thermistor. Explain the effect of decreasing the temperature of the thermistor on the ammeter and voltmeter reading
- October 2022, AS Unit 2, Q3 (1 mark): A negative temperature coefficient thermistor and a fixed resistor are connected in a circuit, as shown. A V The temperature of the thermistor increases. Which
- October 2022, AS Unit 2, Q6 (1 mark): When the temperature of a metal wire increases, the resistance of the wire increases. Which of the following explains this increase in resistance? A the amplitu
- June 2022, AS Unit 2, Q12(b)(ii) (2 marks): Explain how decreasing the temperature of the thermistor affects the power dissipated by the 2.0 kΩ resistor. Do not include calculations in your answer. (2)
- June 2022, AS Unit 2, Q13(b)(ii) (3 marks): When the potential difference across the tungsten filament is 140 V the current in the filament is 0.44 A. The table shows typical resistivity values for tungst
- January 2022, AS Unit 2, Q4 (1 mark): As temperature increases, the resistance of a negative temperature coefficient thermistor changes. Which of the following describes the reason for this change?
- October 2021, AS Unit 2, Q4 (1 mark): The temperature of a thermistor is increased. Which row in the table identifies the effect of the temperature increase on the number of conduction electrons and
- October 2021, AS Unit 3, Q1(a) (2 marks): Describe how the student was able to vary the temperature θ of the thermistor for this investigation. (2)
- October 2021, AS Unit 3, Q1(c)(i) (2 marks): Estimate the value of V for a temperature of 0 °C. (2)
- 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
- June 2021, AS Unit 2, Q18(c)(ii) (3 marks): After switch Y had been closed for a few minutes, the power dissipated by the resistor decreased. Explain why. (3)
- 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
- January 2021, AS Unit 3, Q5(c) (6 marks): The relationship between the temperature T and the resistance R of the copper wire is given by R = αR0T + R0 where R0 is the resistance of the wire at 0 °C and
- 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
- October 2020, Unit 5, Q4 (1 mark): A negative temperature coefficient thermistor and a resistor are connected as shown. A V The temperature of the thermistor decreases. Select the row of the tabl
- 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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