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






2. A unit of power.






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






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






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






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






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






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






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






10. A device used to change the voltage of an alternating current circuit.






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






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






13. 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.






14. A transformer designed to raise the voltage of an alternating current. Most common use; In a generating plant to raise the voltage.






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






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






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






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






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






20. 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.






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






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






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






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






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






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






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






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






29. 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.






30. One millionth of an ohm.






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






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






33. Term applied to the loss of voltage in forcing current through any portion of a circuit. Different factors will cause a drop; material - size - (cross - sectional area) length - temperature.






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






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






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






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






38. Opposition to current flow






39. 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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40. 1.Material itself (Atomic Structure - Good conductor or Bad) 2.Length of the conductor 3.Cross - sectional area (Size) 4.Temperature






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

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






43. One millionth of a volt.






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






45. The rotating member of an electrical machine.






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






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






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






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






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







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