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






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






3. 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.






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






5. A measuring device.






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






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






8. One millionth of an ampere.






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






10. One- thousandth of a ampere






11. The opposite ends of a magnet where the magnetism is concentrated. Each magnet has two poles - designated as north and south.






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






13. 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.






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






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






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






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






18. One millionth of an ohm.






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






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






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






22. 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)






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






24. 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.






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






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






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






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






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






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






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






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






33. One- thousandth of volt.






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






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






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






37. One million ohms.






38. Total and complete opposition to the flow of electrons






39. An instrument for measuring electric current






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






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






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






43. The rotating member of an electrical machine.






44. 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.






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






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






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






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






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






50. Negative charge of electricity