Question

Find the capacitance of the following combinations between terminals A and B. Area of the plate is A and the separation between the nearest two plates is ‘d’.

Answer 1

When A and B are connected to the positive and negative plates of the battery, respectively, the charges will appear on them as:

It is clear from the figure that two capacitors are formed, which are in parallel. Thus,

C_AB = 2C

= `(2 epsilon_0 A)/d`