(a)[3]
In the space below, draw a circuit diagram that includes the thermistor, the battery and the ammeter.
(b(i).1)[3]
Using Fig. 11.1, calculate the p.d. across the thermistor.
(b(i).2)[2]
Calculate the resistance of the thermistor when the temperature is $40\,^{\circ}\text{C}$.
(b(ii))[2]
A thermistor has a resistance of $240\,\Omega$ at $20\,^{\circ}\text{C}$ and $48\,\Omega$ at $60\,^{\circ}\text{C}$. Its resistance does not vary linearly with temperature. Describe how the resistances at $20\,^{\circ}\text{C}$, $40\,^{\circ}\text{C}$ and $60\,^{\circ}\text{C}$ show this.
(c(i))[3]
Describe the structure of a thermocouple thermometer. You may include a diagram if you wish.
(c(ii))[2]
State two advantages of a thermocouple thermometer compared with a liquid-in-glass thermometer.