Across
- 4. a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power.
- 6. the SI base unit of electrical current.
- 7. a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
- 10. the SI unit of power, equivalent to one joule per second, corresponding to the power in an electric circuit in which the potential difference is one volt and the current one ampere.
- 12. a material or device that conducts or transmits heat, electricity, or sound, especially when regarded in terms of its capacity to do this.
- 13. a safety device consisting of a strip of wire that melts and breaks an electric circuit if the current exceeds a safe level.
- 14. a measure of 1,000 watts of electrical power.
- 16. a device having a designed resistance to the passage of an electric current.
- 17. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
- 18. the resistance that one surface or object encounters when moving over another.
- 20. a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen.
- 22. one that has two or more paths for the electricity to flow, the loads are parallel to each other.
- 24. a simple pathway that lets electrons flow to one or more resistors.
Down
- 1. a mechanical or electronic device that automatically regulates a system to maintain a desired state or set point without human interaction.
- 2. an electric current that reverses its direction many times a second at regular intervals, typically used in power supplies.
- 3. an electric current that is uni-directional, so the flow of charge is always in the same direction
- 5. the basic unit of a chemical element.
- 8. the output signal or condition is neither measured nor “fed back” for comparison with the input signal or system set point.
- 9. an electromotive force or potential difference expressed in volts.
- 11. the SI unit of electromotive force, the difference of potential that would drive one ampere of current against one-ohm resistance.
- 15. a substance or device which does not readily conduct electricity.
- 19. a flow of electricity that results from the ordered directional movement of electrically charged particles.
- 21. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
- 23. the force exerted per unit area.