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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. One- thousandth of a ampere






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






3. A coil of wire designed to act as a magnet as a result of carrying an electrical current. It is usually wound on a soft iron core.






4. A material which can be magnetized - principally iron.






5. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)






6. A short circuit between two energized conductors and/or an energized conductor and a grounded phase. Very high current flow.


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






8. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.






9. A circuit with two or more paths for the current to take.






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






11. One million ohms.






12. The unit of Electro- Motive Force






13. An instrument for measuring electric current






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






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






16. The magnetism which a material retains after the magnetic force which magnetized it has been removed.






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






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






19. Negative charge of electricity






20. One millionth of a volt.






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






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






23. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.






24. A unit of power.






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






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






27. Hardened steel which has been magnetized artificially and which retains its magnetic properties






28. A connection of circuit of low resistance. Current through each of the end- to- end devices is exactly the same. Only one path for the current.






29. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.






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






31. One millionth of an ohm.






32. Total and complete opposition to the flow of electrons






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


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






35. The space around a magnet in which the magnetic force is felt.






36. An instrument for measuring electrical power. Most common use: The meter of your house to measure electrical consumption.






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






38. Lines representing the direction of the magnetic force in a magnetic field.






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






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






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






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






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






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






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






46. One millionth of an ampere.






47. 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.


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






49. The electrodes of a cell shaped as plates to expose a surface as possible to the electrolyte.






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