# Another Capacitnence question

1. Oct 17, 2005

### Squ33

What is the formula for finding the voltage across a capacitor?

2. Oct 17, 2005

### Jameson

$$V=\frac{Q}{C}$$

where V is voltage, Q is the charge, and C is the capacitance.

3. Oct 17, 2005

### Squ33

Umm, if I have two in capacitors (5E-6 C and 15E-6 C) in series, and the source voltage is 15V, what would the voltage across the first one be?

I know in parallel it would be 15, but how would you do it if they were in series?

4. Oct 18, 2005

### phy_bits

in series....the charge on both capacitors is the same n the sum of voltages across the 2=source voltage......now work it out