Question

write an expression for series combination of capacitance​

Answer 1

We can find an expression for the total capacitance by considering the voltage across the individual capacitors shown in Figure 1. Solving C=QV C = Q V for V gives V=QC V = Q C . The voltages across the individual capacitors are thus V1=QC1,V2=QC2, and V3=QC3 V 1 = Q C 1 , V 2 = Q C 2 , and V 3 = Q C 3 .