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






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






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






4. 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.






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






6. Negative charge of electricity






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






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






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






10. A generator that produces alternating current.






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






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






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






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






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






16. One millionth of an ampere.






17. A measuring device.






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






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






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






21. One millionth of an ohm.






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






23. Total and complete opposition to the flow of electrons






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






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






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






27. An instrument for measuring electric current






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






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






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






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






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






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






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






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






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






37. 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.






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






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






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






41. One- thousandth of volt.






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






43. 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.






44. 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)






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






46. The unit of electromotive force - potential - pressure - or voltage which produces a current of one ampere in a circuit having a resistance of 1 ohm. This is the force created to move electrons through a circuit.






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






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






49. A circuit carrying three alternating currents whose cycles begin one after another. 120 electrical degrees apart.






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