(a)[3]
Explain why the capacitor stores energy but not charge.
(b(i))[2]
Use Fig. 3.2 to find the capacitance of the capacitor.
(b(ii))[2]
Use Fig. 3.2 to find the loss in energy stored in the capacitor when the potential difference $V$ falls from $10.0\,\text{V}$ to $7.5\,\text{V}$.
(c)[3]
Three capacitors $X$, $Y$ and $Z$, each with capacitance $10\,\mu\text{F}$, are arranged as shown in Fig. 3.3. At first the capacitors are uncharged. A potential difference of $12\,\text{V}$ is then applied between points $A$ and $B$. Determine the magnitude of the charge on one plate of capacitor $X$.