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Basic Electricity Vocab

Subject : engineering
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.






2. One millionth of an ampere.






3. One millionth of a volt.






4. A unit of power; equal to 550 foot- pounds per second of approximately 746 watts.






5. A resistor designed so that its resistance is readily adjusted.






6. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.






7. Transformer coil connected to the load. (Output side of a transformer regardless of voltage).






8. The moving part of a dynamo or motor consisting of coils of wire around an iron core.






9. A circuit with more than one path. Current branches to flow in every available path.






10. The process of producing an electromotive force in a conductor as a result of the cutting of magnetic lines of force by a conductor.






11. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.






12. The center portion of an atom which has a positive electrical charge.






13. A material which CANNOT be magnetized. Example: Wood - Glass - Brass - Rubber...






14. The complete path through which the lines of force travel - leaving the north pole and re- entering the south pole.






15. A rate of movement of electrons through a conductor.






16. The path of an electric current. To permit a steady flow of current - the path must be complete. Commonly - a complete circuit includes a device for the production of an electromotive force - connecting wires - and a device supplied with electricity.






17. Smallest part a substance can physically divided into composed of 2 or more atoms.






18. The property of a material that opposes the flow of current.






19. A circuit in which there is resistance (load) connected both in series and parallel.






20. A material that has many free electrons thus allowing electric current to flow through it easily.






21. Meter used to measure resistance in an electrical circuit.






22. One millionth of an ohm.






23. The area surrounding a magnet in which magnetic properties are exhibited






24. The unit of resistance. It is the resistance through which a voltage of 1 volt will produce a current of 1 ampere.






25. One million ohms.






26. Occurs when a stream of electrons are caused to move through a conductor.






27. A complete sequence of events - as an alternating- current cycle.






28. The unit of Electro- Motive Force






29. Several secondary cells connected together for either a greater voltage or current output.






30. A unit of POWER. 1 kilowatt = 1 -000 watts






31. In an electrical circuit - or part of an electric circuit - the intensity of the current is equal to the electromotive force that drives it divided by the resistance of the circuit.

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32. A device used to change the voltage of an alternating current circuit.






33. In a battery - the electrode which takes up the electrons returning from the external circuit.






34. A rod or strip composed of two metals having different rates or coefficients of expansion. Upon being heated - it bends in a direction which causes the material with the greater rate of expansion to be on the outside.






35. A unit of power.






36. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.






37. One- thousandth of volt.






38. Fundamental constituents of matter. The 'elements' (tiny particles) which come together in various combinations to form molecules of many substances.






39. An alternating current which current cycle begins later that its voltage cycle.






40. Invisible lines along which magnetic energy travels from one pole of a magnet to the other.






41. Single NEGATIVE electrical charge. Orbits around the nucleus some in paths close to the nucleus - others in paths varying distance from the nucleus.






42. Negative charge of electricity






43. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.






44. The number of cycles per second. Example: 60 cycles per second alternating current.






45. An alternating current which current cycle begins earlier than its voltage cycle.






46. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.






47. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.






48. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours






49. Shows relationship between Current - Voltage - Wattage and Resistance.

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50. Total and complete opposition to the flow of electrons