# A 330 pF capacitor and a 220 pF capacitor in series are each connected across a 6 V dc source. What is the voltage across the 330 pF capacitor?

##### 1 Answer

#### Explanation:

For capacitors in series like this the total charge stored by each capacitor is the same.

The capacitance

So:

Let

and

So:

The voltage drop across the 2 capacitors = 6V so we can write:

We have 2 simultaneous equations here so from

We can now substitute this expression for

- which is the voltage drop across the
#330"pF"# capacitor.

This also means that