Calculating Capacitance

             

       Capacitors in parallel. 
When two or more capacitors are connected side by side as in the figure below they are said to be in parallel, the potential difference across both the capacitors is the same.

and the sum of the capacitors in parallel is :

C = C1 + C2 + C3...........Cn

                       Capacitors in series. 
When two or more capacitors are connected end to end they are said to be in series. The voltage across the capacitors is not the same. And the resultant capacitance is :