*from the negative charge. Thus “negative work” is done in moving the positive charge towards the negative charge.*

**away**

**Energy Stored in a charged Capacitor**

When a capacitor is charged energy is stored as electric potential energy. If you plot the potential difference across the capacitor against the charge stored on the capacitor the area under the curve will be equal to the work done by the cell in forcing the electrons (the charge) onto the negative plate, and taking them off the positive plate. Since the work done by the cell in charging the capacitor must be equal to the energy stored by the capacitor (energy must be conserved) the energy stored by the capacitor is the area under such a curve. Since the curve is linear the area under (and hence the energy stored):

Since we also know that , we can substitute into the energy stored equation to get variations of the function for when we have different unknowns to work out:

**Capacitor Discharge through a fixed resistor**