B. An open circuit is a circuit that is not complete. There is a break in the circuit that does not allow the electric current to flow. When a light is turned off, an open circuit is created. When the light is turned on, a complete circuit is created. The light switch acts as a bridge for the electric current to travel through the circuit.
Electricity is produced from a power source.
A. Batteries 1. A battery contains chemicals that can push electrons from one atom to the next. Batteries make electrons move in one direction producing a direct current. B. Generators 1. Generators move electrons by coils of wire and magnets.