In electromagnetism and electronics, capacitance's the ability of a body to hold an electrical charge. Capacitance's also a measure of the amount of electric charge stored (or separated) for a given electric potential. A common form of charge storage device's a two-plate capacitor. Capacitance's directly proportional to the surface area of the conductor plates and inversely proportional to the separation distance between the plates. If the charges on the plates are +Q and −Q, and V gives t… (More on Capacitance)