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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 only one path for current to flow. There are no branches.






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






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






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






5. 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.






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






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






8. A generator that produces alternating current.






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






10. 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






11. One- thousandth of a ampere






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






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






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. Total and complete opposition to the flow of electrons






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






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






18. Opposition to current flow






19. 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.


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






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






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






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






24. The unit of Electro- Motive Force






25. A certain force exhibited by some materials which give them the ability to attract other materials. Principally iron or its alloys.






26. Negative charge of electricity






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






28. 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.






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






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






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






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






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






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






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






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






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






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






39. A unit of power.






40. One- thousandth of volt.






41. 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.






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






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






44. One millionth of a volt.






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






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






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






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






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






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