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






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






3. A unit of power.






4. 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.






5. The unit of Electro- Motive Force






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






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






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






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






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






11. A measuring device.






12. 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.






13. One- thousandth of a ampere






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. Negative charge of electricity






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






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






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






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






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






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






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






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






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






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






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






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






28. One millionth of an ohm.






29. 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)






30. 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.






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






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






33. A generator that produces alternating current.






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






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






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






37. One millionth of an ampere.






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






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.

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






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






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






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






44. One million ohms.






45. One millionth of a volt.






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






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






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






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






50. One- thousandth of volt.