electrical energy flow of electricity is the energy carried by tiny particles called electrons moving from one place to another in wires, light bulbs, or motors the movement of electricity through a closed circuit conductor allows electricity to pass through insulator stops the flow of electricity series circuit circuit in which electric current only follows one path parallel circuit circuit in which electric current divides into two or more paths before recombining to complete the circuit electric current the flow of electricity through a conductor that can produce light, heat, and sound closed circuit complete circuit is the loop through which electric current travels. There are no breaks in the path. open circuit incomplete circuit has at least one break in the loop that interrupts the flow of electricity switch control for opening and closing a circuit