(a(i))[1]
State what the term infinite input impedance means.
(a(ii))[1]
State what the term infinite bandwidth means.
(b(i))[1]
Show that the potential at point $X$ is $0.40\,\text{V}$.
(b(ii))[3]
The thermistor has a resistance of $360\,\text{k}\Omega$ at one temperature. For this thermistor temperature, Calculate the magnitude of the voltmeter reading.
(b(iii))[2]
The temperature of the thermistor rises. State and explain the effect of this change on the magnitude of the voltmeter reading.
(b(iv))[1]
Explain why the amplifier circuit will no longer indicate temperature changes when the magnitude of the circuit gain is greater than $12.5$.