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






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






3. Negative charge of electricity






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






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






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






8. One millionth of an ampere.






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






10. 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.






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






12. One- thousandth of volt.






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






14. The unit of Electro- Motive Force






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






16. 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.






17. Opposition to current flow






18. 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.






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






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






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






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






23. Total and complete opposition to the flow of electrons






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






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






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






27. One million ohms.






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






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






30. 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.






31. 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)






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






33. One millionth of a volt.






34. One millionth of an ohm.






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

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






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






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






39. Those electrons in orbits farthest out from the nucleus - loosely bound and migrate from one atom to another.






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






41. 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.






42. A measuring device.






43. Coil connected to the source of power on a transformer.






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






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






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






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






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






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






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







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