# What are some examples of capacitors in series?

Mar 4, 2018

Well basic principle says that,when you have two capacitors of capacitance ${C}_{1}$ and ${C}_{2}$ is series,the equivalent capacitance becomes, $\frac{{C}_{1} {C}_{2}}{{C}_{1} + {C}_{2}}$

Well I am giving you only one example where the circuit looks like a series combination of capacitors,but is not so.

suppose in the figure above,all the capacitors has a capacitance of $C$,and you are asked to find the equivalent capacitance between point $A$ and $B$

Now,current will follow the pathway having least resistance,so it will not flow through the $3$ capacitors present in between the terminal two capacitors,i.e current will follow along the path of $C F$ in which no capacitor is present.

So,we have two capacitor of capacitance $C$ in series,hence the equivalent capacitance of the circuit becomes, $\frac{C \cdot C}{C + C} = \frac{C}{2}$

Hope this helps you :)