To determine the total electrical capacitance in an electronic circuit the following formulas can be used depends on how the circuit is connected.
In a series connection circuit the relationship between the total electrical capacitance, voltage and the total electrical charge is given by:
V = Q/C = Q/C1 + Q/C2 + ... + Q/Cn
thus
1/C = 1/C1 + 1/C2 + ... + 1/Cn
In a parallel connection circuit the total electrical capacitance is given by:
C = C1 + C2 + ... + Cn
and for the total electrical charge:
Q = Q1 + Q2 + ... + Qn