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






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






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






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






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






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






7. A unit of power.






8. Total and complete opposition to the flow of electrons






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






11. 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)






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






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






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






15. An instrument for measuring electric current






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






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






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






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






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






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






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






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






24. The rotating member of an electrical machine.






25. One millionth of a volt.






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






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






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






29. A connection of circuit of low resistance. Current through each of the end- to- end devices is exactly the same. Only one path for the current.






30. A measuring device.






31. Opposition to current flow






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






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






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






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






36. A generator that produces alternating current.






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






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






39. The property of a material that opposes the flow of current.






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






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






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






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






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






46. One millionth of an ohm.






47. 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.






48. A current which reverses in direction at regularly recurring intervals - the total flow in one direction being equal to that in the other direction.






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






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