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3.2 Simple circuits

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Question 12
H

A student wants to investigate how the resistance of an NTC thermistor changes with temperature.

She has this apparatus:

  • an NTC thermistor sealed inside a waterproof test tube
  • a beaker of water and some ice
  • a kettle of hot water
  • a thermometer
  • a low-voltage d.c. power supply
  • an ammeter and a voltmeter
  • connecting leads

Describe how she could carry out the investigation and use her measurements to find the resistance of the thermistor.

In your answer, describe the results she should expect.

[6]
Markscheme

3.2 Simple circuits Questions

  1. GCSE
  2. /Physics
  3. /3.2 Simple circuits

42 exam-style questions on OCR GCSE Physics 3.2 Simple circuits, covering 3.2.1 Series and parallel circuits, 3.2.2 Circuit symbols and circuit diagrams, 3.2.3 Current, potential difference and resistance, 3.2.4 Ohm's law, 3.2.5 Ohmic and non-ohmic resistors, 3.2.6 Designing circuits to investigate resistance, 3.2.7 Linear and non-linear circuit components, 3.2.8 Current-potential difference graphs for components, 3.2.9 Resistance in series and parallel, 3.2.10 Series and parallel circuit problems, 3.2.11 Circuits for measurement and testing, 3.2.12 Power transfer in circuit devices, and 3.2.13 Energy and power in resistor circuits. Each one has a worked solution and a mark scheme showing where the marks go.

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