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






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






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






4. The difference between the electrical condition of one point in an electric circuit and that of another point which tends to cause current to flow between two points. Measured in volts.






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


6. A single electron or one of two or more electrons in the outer shell of an atom that is responsible for the chemical properties of an atom.






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






8. The unit of Electro- Motive Force






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






10. Opposition to current flow






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


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






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






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






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






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






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






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






19. One millionth of an ohm.






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






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






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






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






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






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






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






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






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






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






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






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






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






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






36. One- thousandth of a ampere






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






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






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






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






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






42. 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.






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






44. 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.






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






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






47. Total and complete opposition to the flow of electrons






48. One- thousandth of volt.






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






50. 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.