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Thermistor Questions

Q1. The graph shows how the current through a thermistor varies with the potential difference across it.

(a) Draw the circuit of an experimental arrangement which could be used to collect the data necessary to produce this graph. On your circuit diagram label clearly a component which would enable the current to be changed continuously across the range.

(4 marks)

(b)

(i) Using information obtained from the graph, calculate the resistances of the thermistor when the current is 0.10 mA and also when the current is 0.60 mA.

(ii) Using the results of part (b) (i) deduce how the resistance of the thermistor changes as its temperature increases.

(5 marks)

(Total 9 marks)