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






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






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






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






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






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






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






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






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






10. The rotating member of an electrical machine.






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






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






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






14. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.






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






16. 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.






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






18. Negative charge of electricity






19. A unit of power.






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






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






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






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






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






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






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






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






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






30. The unit of Electro- Motive Force






31. A measuring device.






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






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






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






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






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






37. 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.






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






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






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






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






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






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






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






45. Coil connected to the source of power on a transformer.






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






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






48. 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






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 rate of movement of electrons through a conductor.







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