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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. 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.






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






3. The unit of Electro- Motive Force






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






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






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






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






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






9. One millionth of an ampere.






10. Opposition to current flow






11. 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.






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






13. A unit of power.






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






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






16. 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.






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






18. 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.






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






20. A generator that produces alternating current.






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






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






23. 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.






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






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






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

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






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






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






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






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






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






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






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






36. An instrument for measuring electric current






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






38. 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






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






40. 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.






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






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






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






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






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






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






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






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






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






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