system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Where do electrons go after "completing a circuit"?

Basically electricity comes from "electron";
Let's suppose one builds a capacitor out of salt water(electrolyte) then charge it and attach a 1W LED.


Isn't the LED supposed to always be lit, or the electron just transforms in something else after completing a circuit?
gpt
electricity comes from electrons moving from higher negative charge positions into lower ones. imagine it like high altitude electricity plants(the ones pumping water up to later make it fall down to extract the electricity again). same goes for electrons in a battery. one side of the battery has a high density of electrons, the other a low one. the difference between those two equal the voltage (the force with which the electrons are being "pushed" to the other side, since they want to nullify the difference and with it lowering their energy). so the answer to your question is "they move to a position with a lower negative charge than before"
edit.: afaik its called potential energy what the electrons have before discharging. its comparable with falling objects which turn potential energy into kinetic energy.