
Originally Posted by
Harold14370
Electrons are everywhere, but in metals there are a lot of free electrons that move easily. You do not create an electrical circuit by connecting opposite poles together. That would be a dead short. In a d-c circuit you want to connect the positive pole to one end of the circuit and negative to the other. The electrons move through the circuti, so they have to go through the wires, the battery, and everything else in the circuit. In an a-c circuit, the electrons move first toward one end then toward the other. The actual distance moved by the electrons is very small, so it would not be accurate to say they move from one end to the other. It is usually a sine wave rather than a zig-zag.