A capacitor consists of two parallel metal plates, separated by an insulator, as shown in Fig. 7.1. [Figure 7.1]

1. (a)Suggest why, when the capacitor is connected across the terminals of a battery, the capacitor stores energy, not charge.[2]
2. (b)Define the capacitance of the capacitor.[2]
3. (c)The capacitor is charged so that the potential difference between its plates is V₀. The capacitor is then connected across a resistor for a short time. It is then disconnected. The energy stored in the capacitor is reduced to ¹/₁₆ of its initial value. Determine, in terms of V₀, the potential difference across the capacitor. potential difference = ..............................................................[2][2]

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