(a(i))[1]
Define capacitance in this context.
(a(ii))[4]
A capacitor consists of two metal plates that are insulated from each other, as shown in Fig. 5.1. Explain why the capacitor is described as storing energy but not charge.
(b)
(b(i))[2]
Three uncharged capacitors X, Y and Z, each with capacitance $12\,\mu\text{F}$, are arranged as shown in Fig. 5.2. A potential difference of $9.0\,\text{V}$ is applied between points A and B. Calculate the combined capacitance of capacitors X, Y and Z.
(b(ii))[2]
Explain why, when a potential difference of $9.0\,\text{V}$ is applied, the charge on one plate of capacitor X is $72\,\mu\text{C}$.
(b(iii)1)[1]
Find the potential difference across capacitor X.
(b(iii)2)[2]
Determine the potential difference across capacitor X in the arrangement.