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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 more than one path. Current branches to flow in every available path.






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


3. The path of an electric current. To permit a steady flow of current - the path must be complete. Commonly - a complete circuit includes a device for the production of an electromotive force - connecting wires - and a device supplied with electricity.






4. 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)






5. 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.






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






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






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






9. A generator that produces alternating current.






10. 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.






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






12. The dissimilar metals which are placed in an electrolyte to form a cell.






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






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






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






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






17. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.






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






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






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






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






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






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






24. 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.






25. Opposition to current flow






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






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






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






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






30. 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.






31. One- thousandth of volt.






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






33. 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.






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






35. The rotating member of an electrical machine.






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






37. Total and complete opposition to the flow of electrons






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






39. A measuring device.






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






41. The unit of Electro- Motive Force






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






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






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






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






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






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






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






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


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