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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 rate of movement of electrons through a conductor.






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






3. A unit of power.






4. 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.






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

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6. 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.






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






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






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






10. 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)






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






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






13. Opposition to current flow






14. 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.






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






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






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






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






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






20. 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.






21. 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.






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






24. Total and complete opposition to the flow of electrons






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






26. 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.






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






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






29. One million ohms.






30. 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.






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






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






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






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






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






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






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






38. A generator that produces alternating current.






39. One- thousandth of volt.






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






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






42. An alternating current which current cycle begins later that its voltage cycle.






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






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






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






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






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






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






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






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