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






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






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






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






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






6. Opposition to current flow






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






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






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






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






11. One- thousandth of a ampere






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






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






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






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






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

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






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






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






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






21. One millionth of an ohm.






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






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






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






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






26. Those electrons in orbit nearest the nucleus - not easily dislodged from their normal orbits.






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






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






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






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






31. One millionth of a volt.






32. Negative charge of electricity






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






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






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






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






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






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






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






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






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






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






43. A generator that produces alternating current.






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






45. 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






46. The unit of Electro- Motive Force






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






48. 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.






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






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