Across
- 4. a flow of electricity that results from the ordered directional movement of electrically charged particles.
- 6. loop a mechanical or electronic device that automatically regulates a system to maintain a desired state or set point without human interaction
- 9. provide (a circuit or electrical appliance)
- 10. an electromotive force or potential difference expressed in volts.
- 11. 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
- 13. continuous physical force exerted on or against an object by something in contact with it.
- 14. a subatomic particle found in the nucleus of every atom. The particle has a positive electrical charge, equal and opposite to that of the electron.
- 15. unit of electrical potential, potential difference and electromotive force in the metre–kilogram–second system
- 18. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.
- 20. loop a control system for an operation or process in which there is no self-correcting action as there is in a closed loop.
- 21. a substance which does not readily allow the passage of heat or sound.
- 22. circuit comprises a path along which the whole current flows through each component.
- 23. the resistance that one surface or object encounters when moving over another.
- 25. currentwhich periodically reverses direction and changes its magnitude continuously with time in contrast to direct current
- 26. a container consisting of one or more cells, in which chemical energy is converted into electricity and used as a source of power.
Down
- 1. a person who directs the performance of an orchestra or choir.
- 2. 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.
- 3. current an electric current that is uni-directional, so the flow of charge is always in the same direction.
- 5. a device having a designed resistance to the passage of an electric current.
- 7. nucleus An electron that is bound to an atom is one of the three primary types of particles within the atom
- 8. circuit comprises branches so that the current divides and only part of it flows through any branch.
- 12. is the unit of electric current in the International System of Units
- 16. a measure of 1,000 watts of electrical power.
- 17. a particle of matter that uniquely defines a chemical element.
- 19. passive two-terminal electrical component that implements electrical resistance as a circuit element.
- 24. 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.