The graph of Figure 23.8 shows how V depends on Q for a particular capacitor.

The area under the graph has been divided into strips to make it easy to calculate the energy stored.
The first strip (which is simply a triangle) shows the energy stored when the capacitor is charged up to 1.0 V. The energy stored is:

Calculate the capacitance C of the capacitor.
Copy Table 23.2 and complete it by calculating the areas of successive strips, to show how W depends on V.
Plot a graph of W against V. Describe the shape of this graph.

Transcribed Image Text:

V/V 4 2- 1 1 2 4 Q/ mC 3.