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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 unit of electromotive force - potential - pressure - or voltage which produces a current of one ampere in a circuit having a resistance of 1 ohm. This is the force created to move electrons through a circuit.






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






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






4. 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.






5. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.






6. The part of the magnet where the magnetic force is most concentrated. Commonly referred to as the North or South pole or the positive or negative poles)






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






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






9. The time rate at which work is done or energy is transferred. When a pressure of 1 volt sends a current of 1 ampere through a resistance of 1 ohm - the power in the circuit is said to be 1 watt.






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






11. A complete path provided for the flow of electrons. Consists of a source - with a closed conducting path leading from the source and back to the source






12. Certain quantity of electrons. The unit of measure that specifies the rate at which electric current flows per second.






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






14. Total and complete opposition to the flow of electrons






15. Rate of electrons flow (current flow). When one 'Coulomb' of electrons pass a given point in one second.






16. The unit of Electro- Motive Force






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






18. A cell which is composed of certain materials which are used up during the process of delivering electric current.






19. Iron and certain alloys of iron which are magnetized by artificial means.






20. That property of a material which determines how readily it conducts magnetic lines of flux. Opposite magnetic quality or conductivity.






21. A measuring device.






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






23. A very low resistance path placed in a circuit in such a manner as to allow an excessive current flow.






24. Positive charge of electricity. Located in the nucleus of the atom.






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






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

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






28. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.






29. (EMF) The force created by an electric generator (or by other means) which causes current to flow. (Same as Voltage - Volts - Electric Potential - Pressure).






30. Electric charges at rest. Caused by friction of materials - where a surplus of electrons exists and may be discharged.






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






32. A unit of power.






33. A circuit with only one path for current to flow. There are no branches.






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






35. The liquid solution (sometime a paste) in which the electrodes are placed.






36. The condition where the free electrons are caused to move in the same direction along or through a conductor.






37. The dissimilar metals which are placed in an electrolyte to form a cell.






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






39. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.






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






41. Single POSITIVE electrical charge - located in the middle of an atom.






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






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






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






45. A material with few free electrons. A structure or material used to prevent the passage of current.






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






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






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






49. 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.






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