# Homework Help: Capacitance question

1. Feb 24, 2010

### isuck@physics

1. The problem statement, all variables and given/known data

A 24-µF capacitor has an electric potential difference of 30 V across it. What is the charge on the capacitor?

2. Relevant equations

kq1q2/r2?, q/change in V?

3. The attempt at a solution
ive tried looking through my notes but i was absent dont understand this if you could give me a step by step i would appreciate it.

Last edited: Feb 24, 2010
2. Feb 24, 2010

### rl.bhat

Hi isuck@physics, welcome to PF.
The relevant equation given by you is wrong. Search for the relation between capacitance , potential difference and the charge in a capacitor.

3. Feb 24, 2010

### netheril96

Do you really understand the concept of capacitance?
Just put the figures into the formula of definition
$$$C = \frac{q}{U}$$$