They store electrical energy. The energy is stored by pumping electrons onto one side of the capacitor, and pumping them out of the other side. As you fill up one side, the electrons start repelling each other so you have to keep pushing harder and harder. That pushing takes energy and it gets stored in the capacitor like you are energy store by squeezing a spring.
The electrons really want to get back to an even distribution. They can’t go through the capacitor because there is a barrier in the way. So if they get a chance, they will try to go back through your circuit, like a spring re expanding if you give it a chance by letting go. As the electrons try to go back to an even distribution they will release energy as they go.
Latest Answers