A student wants to investigate how the resistance of a thermistor changes with temperature between 20 ∘C20\ ^{\circ}\text{C}20 ∘C and 80 ∘C80\ ^{\circ}\text{C}80 ∘C.
The student has a thermistor, a battery, an ammeter, a voltmeter, a beaker of water, a kettle and a thermometer.
Describe how the student could carry out this investigation.
Your answer should include how the resistance is found and the results the student should expect.
81 exam-style questions on Edexcel GCSE Physics 10.2 Resistance, covering 10.2.1 Current in a circuit and conservation at junctions, 10.2.2 Resistance and variable resistors, 10.2.3 Series and parallel resistance, 10.2.4 I–V characteristics of components, and 10.2.5 LDRs and thermistors. Each one has a worked solution and a mark scheme showing where the marks go.