A capacitor is a passive electrical component whose characteristic feature is capacitance. In addition, each real capacitor exhibits other, so-called parasitic properties, such as inductance and resistance, which distinguishes it from a capacitor, which is intended to be an ideal component that has only a capacitance that is also constant and independent of ambient conditions.
The capacitor consists of two conductive plates (electrodes) separated by a dielectric. Electric charges of opposite polarity are applied to each of the plates, which are attracted to each other by an electric force. The dielectric between the plates does not allow the charged particles to come into contact, thereby neutralizing or otherwise discharging the electric charges. At the same time, the dielectric reduces the strength of the electric field of the charges on the plates by its polarization and thus allows the placement of a larger amount of charge.