Capacitors are electronic devices that store electrical energy in the form of an electrical charge that accumulates on their plates as a result of their operation. Whenever a capacitor is linked to an electrical power source, it accumulates energy that is then able to be released when it is detached from the power source; hence, capacitors are similar to batteries in this regard.
Its two plates each contain charges that are diametrically opposed to one another, and the space between them forms an electric field. It is for this reason that a capacitor stores energy. Artwork: When positive and negative charges are pulled apart, energy is stored. This is the fundamental idea that underpins the capacitor.