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






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






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






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






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






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






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






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






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






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






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






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






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






14. 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)






15. One- thousandth of volt.






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






17. 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.






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






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






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






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






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


23. Negative charge of electricity






24. A current limiting device designed to melt and break the circuit when a specified current is exceeded. (The weakest point in a circuit)






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






26. Total and complete opposition to the flow of electrons






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






28. One- thousandth of a ampere






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






30. A machine which utilizes magnetism to produce an EMF and consequently - an electric circuit.






31. Opposition to current flow






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






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






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






35. The unit of Electro- Motive Force






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






37. A measuring device.






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






39. 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.


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






41. One millionth of an ampere.






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






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






44. An instrument for measuring electric current






45. 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.






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






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






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






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






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