Capacitance

A capacitor is a device used to store an electric charge, consisting of one or more pairs of conductors separated by an insulator. It gets its name from the fact that it has a capacity to sore both electric charge and energy. A capacitor is like a battery in the sense that they both store electrical energy. Inside the capacitor, terminals connect two metal plates separated by a non-conducting substance or any non-conductive substance. Once one plate acquires a charge, the other acquires and equal and opposite charge. The greater the charge for a given voltage, the greater the capacitance is of the capacitor. An example of a capacitor is an electrograph. An electrograph is a machine used for the electrical transmission of pictures.