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






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






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






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






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






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






7. Total and complete opposition to the flow of electrons






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






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






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






11. One million ohms.






12. Negative charge of electricity






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

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14. A generator that produces alternating current.






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






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






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






18. 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






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






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






21. An alternating current which current cycle begins earlier than its voltage cycle.






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






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






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






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






26. 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.






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






28. One millionth of an ohm.






29. One- thousandth of a ampere






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






31. 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.






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






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






34. 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.






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






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






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






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






39. 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)






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






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






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






43. A unit of power.






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






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






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






47. Opposition to current flow






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






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






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