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






2. The property of a material that opposes the flow of current.






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






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






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






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






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






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






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






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






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






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






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






14. A measuring device.






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






16. 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.






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






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






19. 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.






20. One millionth of an ampere.






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






22. 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.






23. 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.






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






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






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






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






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






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






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






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






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






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






34. 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.






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






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






37. 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.






38. The voltage dissipation between any two points in a circuit. The voltage 'dropped' or 'dissipated' in forcing current through a resistance.






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






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






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






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






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






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






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






46. One million ohms.






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






48. 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.






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






50. A generator that produces alternating current.