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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. Meter used to measure resistance in an electrical circuit.






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






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

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






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






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






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






9. One millionth of an ampere.






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






11. 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.






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






13. 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.






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






15. One millionth of an ohm.






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






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






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






19. 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)






20. A unit of power.






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






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






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






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






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






26. 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.






27. One- thousandth of volt.






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






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






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






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






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






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






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






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






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






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






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






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






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






41. 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.






42. A measuring device.






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

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






45. 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






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






47. The rotating member of an electrical machine.






48. Opposition to current flow






49. One millionth of a volt.






50. A generator that produces alternating current.