Electrical Principles And Technology Unit Review

45 Questions | Total Attempts: 246

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Electrical Principles And Technology Unit Review - Quiz

A unt review for this unit including: Calculating Power, Watts, Resistance, Current, Efficiency etc. , Static Electricity, Electrical Safety, Current Electricity, Cells & Batteries, Electrical Circuits (ie. Flashlight), Resistance, Energy Transformation/ Forms, Motors (ie. St Louis Motor, Magnetism) and Electricity Generators. Good Luck :)


Questions and Answers
  • 1. 
    These types of conductors have no resistance to electron flow, which is why they are known to be perfect conductors. They are called _______.
    • A. 

      Superconductors

    • B. 

      Metallic conductors

    • C. 

      Resistance-less conductors

    • D. 

      Magnetic conductors

  • 2. 
    The more charged particles in a solution _________.
    • A. 

      The more voltage it produces

    • B. 

      The more resistance there is

    • C. 

      The less resistance there is

    • D. 

      The less voltage is produced

  • 3. 
    _______ is the direction of a magnetic or electric field.
  • 4. 
    The _____ (one or two words) in an electric motor attracts the armature to create motion; in which, creates electricity.
  • 5. 
    Determine if this statment true or false: A generator stores energy.
    • A. 

      True

    • B. 

      False

  • 6. 
    The movement of charges from an object to another without further movement is called __________.
  • 7. 
    An example of a static electrical charge is _______. 
    • A. 

      Lightning

    • B. 

      Batteries

    • C. 

      Current

    • D. 

      Ohms

  • 8. 
    Why do objects attract to one another?
    • A. 

      Opposite charges

    • B. 

      Similar charges

    • C. 

      Neutrons

    • D. 

      Electrons

  • 9. 
    How does spraying water on laundry help reduce static cling?
    • A. 

      The water absorbs electrical charge

    • B. 

      The water contains protons

    • C. 

      Water is a magnet

    • D. 

      The charges leave onto a different object with opposite charges

  • 10. 
    When electrons discharge, they go into the ground via a _________ wire.
  • 11. 
    A ________ is designed to interrupt the power to a circuit when the current flow exceeds safe levels.
  • 12. 
    A _________ occurs when there is a low resistance connection between two conductors supplying electrical power to any circuit.
    • A. 

      Short circuit

    • B. 

      Malfunction

    • C. 

      Electrical shock

    • D. 

      Spark

  • 13. 
    ____________ is the energy carried by charged particles.
  • 14. 
    How much current is created when a 30 V battery creates a current through a 15 Ω resistor?
  • 15. 
    The measurement used to measure voltage is ________.
  • 16. 
    The measurement used to measure current is _______.
  • 17. 
    The process of which you use a small battery to split molecules into their elements is called _________.
    • A. 

      Electrolysis

    • B. 

      Hydro-plating

    • C. 

      Hydrolysis

    • D. 

      Energy transformation

  • 18. 
    A _________, is a paste or liquid that conducts electricity because it contains chemicals that form ions.
    • A. 

      Electrolyte

    • B. 

      Battery

    • C. 

      Dry cell

    • D. 

      Wet cell

  • 19. 
    Who had made the first practical battery by piling copper and zinc disks on top of each other, and then seperating them with electrolyte-soaked paper discs. 
    • A. 

      Alessandro Volta

    • B. 

      Faraday

    • C. 

      Van de Graff

    • D. 

      Ohm

  • 20. 
    A dry cell is different from a wet cell because it is ____________.
    • A. 

      Rechargeable

    • B. 

      Non-rechargeable

    • C. 

      Wet

    • D. 

      Less resistance

  • 21. 
    The longer the wire is, the ______ its resistance.
    • A. 

      Lower

    • B. 

      Greater

    • C. 

      Wider

    • D. 

      Thinner

  • 22. 
    The thicker the wire is, the ________ its resistance.
    • A. 

      Lower

    • B. 

      Greater

  • 23. 
    The ______  a wire is, the lower the resistance.
    • A. 

      Cooler

    • B. 

      Hotter

    • C. 

      Less conductive

  • 24. 
    A _________ is a continuos resistor used to regulate electric current, it is also used to change the current flow.
    • A. 

      Rheostat

    • B. 

      Voltmeter

    • C. 

      Ammeter

    • D. 

      Battery

  • 25. 
    What is the total resistance of a parallel circuit with two 20-ohm resistors and a 10-ohm resistor?
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