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






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






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






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






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






6. One millionth of a volt.






7. 1.Speed of conductors cutting lines of force 2.Strength of the magnetic field 3.Length of conductors cutting through the field






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






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






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






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






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






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






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






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






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

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18. 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.






19. One millionth of an ampere.






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






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






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






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






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






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






26. The unit of Electro- Motive Force






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






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






29. The rotating member of an electrical machine.






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






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






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






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






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






35. One millionth of an ohm.






36. A device which capacity is its chief electrical property; a device for storing or holding an electric charge; a capacitor.






37. One million ohms.






38. One- thousandth of a ampere






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






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






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






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






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






44. 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.






45. 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






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






47. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.






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






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






50. A generator that produces alternating current.