As we have assumed to be uniform and fringing of field is neglected, we see that E is constant in the region between the plates and therefore, we can write . Thus, for a parallel plate capacitor we have,                                                                  ........................(2.86)

Series and parallel Connection of capacitors

Capacitors are connected in various manners in electrical circuits; series and parallel connections are the two basic ways of connecting capacitors. We compute the equivalent capacitance for such connections.

Series Case: Series connection of two capacitors is shown in the figure 2.21. For this case we can write,

.......................(2.87)