(a(i))[1]
On Fig. 9.1, label the thermistor.
(a(ii))[2]
On Fig. 9.1, draw a voltmeter symbol, correctly connected, to measure this potential difference.
(b(i))[3]
Calculate the resistance of the thermistor when its temperature is $40^C$.
(b(ii))[2]
Describe and explain how the current in the thermistor changes as the thermistor’s temperature rises.
(b(iii))[1]
Suggest a value for the current in the thermistor at $80^C$.
(c)[1]
Calculate the value of their combined resistance.