(a)[1]
Tick two boxes: one for the correct statement about the potential difference across Y and one for the correct statement about the current in Y.
(b(i))[2]
The student puts thermistor X in series with resistor Y and a battery with e.m.f. $6.0\,\text{V}$. In this circuit, at room temperature, thermistor X has a resistance of $600\,\Omega$ and the current in thermistor X is $0.0020\,\text{A}$. Calculate the power generated in the thermistor.
(b(ii))[3]
Calculate Y’s resistance.
(b(iii))[2]
The thermistor is cooled. Explain why this makes the potential difference across Y fall.