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# Formula Capacitance (Definition) Voltage    Electric charge

## Capacitance

Unit
The capacitance indicates how much electrical charge is separated on two bodies and what voltage is present between these bodies. For example, in a plate capacitor, the capacitance indicates how many charges must be separated on the electrodes so that a voltage of one volt is present between the two electrodes. The capacitance is therefore a measure of how well a capacitor can 'store' electric charge.

The capacitance $$C = 1 \, \mu\mathrm{F}$$ means that the capacitor can 'store' $$Q = 1\,\mu\mathrm{C}$$ of charge when a voltage of one volt is applied.

## Voltage

Unit
Voltage between two bodies, for example between two electrodes of a plate capacitor.

## Electric charge

Unit
Amount of charge sitting on a body, for example on the electrode of a plate capacitor.