6. A cell is an "electrical power supply".
7. A battery is a device that stores chemical energy and converts it to electrical energy.
8. An open circuit is one where the continuity has been broken by an interruption in the path for current to flow. A closed circuit is one that is complete, with good continuity throughout.
9. An electrical switch serves the purpose of controlling the flow of electrical current within a circuit.
10. Direct Current
11. Alternating Current
12. Alternating Current
