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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. One- thousandth of volt.






2. 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






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






4. 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.






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






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






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






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






9. 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.






10. One million ohms.






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






12. 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.






13. 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.






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






15. The unit of Electro- Motive Force






16. 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.






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






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

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19. Opposition to current flow






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






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






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






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

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






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






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






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






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






29. A resistor designed so that its resistance is readily adjusted.






30. Negative charge of electricity






31. An instrument for measuring electric current






32. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.






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






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






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






37. One millionth of an ohm.






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






39. A measuring device.






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






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






42. 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.






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






44. One- thousandth of a ampere






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






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






47. An instrument for measuring electromotive force in volts. It must be connected across the load that causes the votage drop.






48. A unit of work or ENERGY. 1 kilowatt hour = 1 -000 watt hours






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






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