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






2. 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.






3. A cell which is rechargeable. Uses materials which change in compostition during delivery of current - but may be restored to original condition upon recharge.






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






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






6. The rotating member of an electrical machine.






7. One millionth of an ohm.






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






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






10. One- thousandth of a ampere






11. One million ohms.






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






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






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






15. Negative charge of electricity






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






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






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






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






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






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






22. 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.






23. 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.






24. The unit of Electro- Motive Force






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






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






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






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






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






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






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






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






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






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






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


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






37. Any device which may be placed in the circuit and which offers opposition to the flow of electrons around the circuit.






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






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






40. One- thousandth of volt.






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






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






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






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






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






46. 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.






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






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






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






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