Across
- 4. someone whose job is to design, build, or repair machines, engines, roads, bridges, etc
- 6. a device that represents a changing amount on a screen in the form of a line that moves up and down in curves
- 7. a piece of equipment that changes the strength of an electrical current
- 8. an instrument for measuring an unknown voltage by comparison to a standard voltage
- 9. the force of an electric current, measured in volts
- 12. producing a bright light from a heated filament or other part
- 16. a device that collects and stores electricity, and is an important part of electronic equipment such as televisions and radios
- 19. a device used to control and change the flow of electric current through a machine such as an electric light
- 20. a coil used to introduce inductance into an electric circuit
- 21. a machine that produces electricity
- 22. a tall structure that supports electrical wires above the ground
Down
- 1. a device for measuring the strength of an electric current in units called amps
- 2. the flow of electricity through a wire
- 3. a material or covering that electricity, heat, or sound cannot go through
- 5. producing an electric current
- 10. a part of an electrical circuit designed to produce a particular amount of resistance to the flow of current
- 11. any of various devices used for measuring the voltage between two points on an electric circuit
- 13. a substance that allows electricity or heat to go through it
- 14. using electricity for power
- 15. a long piece of wire, rope, etc curled into several circles
- 17. the opposition to the flow of alternating current by the capacitance or inductance of an electrical circuit; the imaginary part of the impedance
- 18. one or more turns of wire forming a continuous coil through which an electric current can pass, as used in transformers, generators, etc