Define the capacitance of a parallel-plate capacitor.

1. (a)Define the capacitance of a parallel-plate capacitor.[2]
2. (b)(i)A student has three capacitors. Two of the capacitors have a capacitance of 4.0 µF and one has a capacitance of 8.0 µF. Draw labelled circuit diagrams, one in each case, to show how the three capacitors may be connected to give a total capacitance of: 1.6 µF[1]
3. (b)(ii)10 µF.[1]
4. (c)A capacitor C of capacitance 47 µF is connected across the output terminals of a bridge rectifier, as shown in Fig. 6.1. The variation with time t of the potential difference V across the resistor R is shown in Fig. 6.2. Use data from Fig. 6.2 to determine the energy transfer from the capacitor C to the resistor R between time t₁ and time t₂. [Figure 6.1] [Figure 6.2][3]

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