A capacitor in its most primitive form consists of two conductive plates separated by a dielectric medium. The term dielectric is just a fancy word for an insulator that can be polarized, i.e. form negative and positive charges on opposite faces. When voltage is applied across these two plates, current flows through the conductive. Since the capacitors have two parallel metal plates as discussed above, their symbol kind of represents the same. At least it's easy to draw In a. Capacitors are measured in Farads; it is named after the famous British electrochemist, Michael Faraday. The unit of capacitance, standing in. The reason for the breakdown voltage ranges is because of the material used as a dielectric, which is also the basis on which capacitors are classified: Basically what is happening inside a capacitor is that the insulator between those plates is undergoing a process called 'dielectric breakdown', meaning the insulator can no longer insulate since the voltage across the.
