(a(i))[2]
For the thermistor at $22.5^{\circ}\text{C}$, Calculate the total resistance between points A and B on Fig. 6.2.
(a(ii))[2]
For the thermistor at $22.5^{\circ}\text{C}$, calculate the voltmeter reading.
(b(i))[2]
The thermistor temperature is altered. The voltmeter now shows $4.0\,\text{V}$. Determine the total resistance between points A and B on Fig. 6.2.
(b(ii))[2]
Determine the temperature of the thermistor.
(c)[2]
A student suggests that the voltmeter, which reads up to $10\,\text{V}$, could be calibrated for temperature measurement. Suggest two disadvantages of using the circuit of Fig. 6.2 with this voltmeter to measure temperature over $0^{\circ}\text{C}$ to $25^{\circ}\text{C}$.
(ii)[2]
Find the temperature of the thermistor.