Capacitors And Capacitance

The capacitance of a capacitor is a measure of the amount of charge stored on each plate for a given potential difference . farad. The capacitance is proportional to the surface area of the conducting plate and inversely proportional to the distance between the plates. Hence, it depends upon the size of the conductor, and not upon the nature of conductor, thickness or colour.

The figure is a belowed Wheatstone bridge. So, diagonal capacitor will be in effective. So, the equivalent circuit will be as shown in the figure.