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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. One- thousandth of a ampere






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






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






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






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 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.






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






9. 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






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






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






12. A unit of power.






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






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






15. A coil of wire designed to act as a magnet as a result of carrying an electrical current. It is usually wound on a soft iron core.






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






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






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






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






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






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






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






23. Negative charge of electricity






24. One- thousandth of volt.






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






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






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






28. Total and complete opposition to the flow of electrons






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






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






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






32. One millionth of an ampere.






33. One million ohms.






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






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






36. 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)






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






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






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






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






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






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






44. The moving part of a dynamo or motor consisting of coils of wire around an iron core.






45. Opposition to current flow






46. A transformer designed to lower voltage of an alternating current. Most common type of transformer used on a power system.






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






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






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

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