The amount of **charge **stored by a *capacitor* is given by Q = CV, and when C is given in μF and V in volts, charge Q is then in microcoulombs (μC).

*How much charge is stored by a *0.1 μF *capacitor charged to *50 V*?*

Using Q = CV with C in μF, V in volts then Q = 0*.*1 × 50 = 5 μC The amount of **energy**, in units of joules, stored by a charged capacitor is most conveniently given byW = ½CV2. Other equivalent expressions are: