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






3. One million ohms.






4. 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.






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






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






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






8. A material which can be magnetized - principally iron.






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






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






11. An instrument for measuring electric current






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






13. One- thousandth of volt.






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. One- thousandth of a ampere






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






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






18. 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.






19. One millionth of a volt.






20. 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.






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






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






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






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






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






26. 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.






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






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






29. (Lode Stone) Certain type of mineral ore which has the natural Properties of a magnet.






30. Any of the spaces occupied by the orbits of a group of electrons of approximately equal energy surronding the nucleus of an atom.






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






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






33. A unit of power.






34. 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)






35. A measuring device.






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






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






38. One millionth of an ampere.






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






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






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






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






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






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






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






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






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


48. 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.






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






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