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






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






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






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






5. One million ohms.






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






7. 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.






8. 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.






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






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

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






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






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






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






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






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






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

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






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






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






21. Total and complete opposition to the flow of electrons






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






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






24. 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






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






26. 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.






27. 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.






28. A unit of power.






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






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






31. An instrument for measuring electric current






32. A generator that produces alternating current.






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






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






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






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






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






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






39. One millionth of an ohm.






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






41. One- thousandth of a ampere






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






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






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






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






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






47. The part of the magnet where the magnetic force is most concentrated. Commonly referred to as the North or South pole or the positive or negative poles)






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






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






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







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