A capacitor is a two-terminal electronic component that stores electrical energy in the form of an electric field. In this illustration, a simple single layer capacitor is shown with two conductive electrodes separated by an insulative dielectric material. Capacitance is the measure of a capacitor’s ability to store charge. The unit of measure for capacitance is Farads and is calculated by the amount of charge (Q) over the voltage (V). Higher capacitance means that more charge can be stored for the same amount of voltage.