Discharging of a capacitor

Discharging of a capacitor

A capacitor is an electrical device that stores energy.  The capacitor is used in electrical networks for storing or consuming energy. A capacitor is also discharged as well as charge. It has two conducting plates with a dielectric medium. A battery is connected to the capacitor for charging but if we have to discharge a capacitor so the battery is disconnected.

It is necessary for the discharging capacitor that capacitor is fully charged. If a capacitor is charged so by removing the voltage source it will start discharging. The capacitor is charged by transferring the electrons from one plate to another plate with the help battery. A capacitor is a passive element in an electrical circuit.

When the voltage source is short-circuited, the automatic capacitor losses its stored energy.

 If we connect a load to the capacitor while discharging so capacitor act like a battery or source that provides power to load. It is necessary to connect a resistor in series with a capacitor to work properly. The process of charging and discharging is very fast, it takes seconds to discharge as well as charge. The strength of capacity of the capacitor depends upon some factors like; the material used in a dielectric medium, the distance between plates, and the area between plates.  

The applied source is short circulated, the capacitor starts to discharge

Let's consider that we have a capacitor that is connected to a battery. As we that capacitor should be charged for discharging itself. The starting current flow is high when the capacitor is discharging and decrease over time and then finally ceased. When the current has ceased that means the capacitor I 

 discharged. The direction of the current flow is opposite to the direction of current while the capacitor is charging. The battery is removed by a short circuit. When the battery is removed, the capacitor starts to discharge, and the energy that the capacitor is stored in gradually decreases. So, by this way capacitor is discharged. In if we connect a load it will work as a battery but, we cannot use a capacitor as a battery because it discharges in few seconds then it will become empty. So we cannot use it as a battery. A capacitor is used in many electronic devices such as electrical circuits, motor starters, signal processing. The common usage of capacitors is fans. It is used in fans and communication devices such as radio, VCR, radar, and television.