Electricity

24 Questions

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Electricity Quizzes & Trivia

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Questions and Answers
  • 1. 
    When an object is positively or negatively charged, it has ______ electricity
  • 2. 
    Positively charged objects have ____ electrons, negatively charged objects have ______ them
    • A. 

      Lost, gained

    • B. 

      Gained lost

  • 3. 
    Charged objects attract neutral (uncharged) objects
    • A. 

      True

    • B. 

      False

  • 4. 
    Charge can be produced by fr______
  • 5. 
    Negatively charged objects discharge if touched by a conductor - like a metal or a person. This is because electrons like to move through these - they want to get to earth
    • A. 

      True

    • B. 

      False

  • 6. 
    Lightning and sparks are caused by a discharge of electrons between positive and negative regions, or when the electrons 'jump' between a charged object and conductor.
    • A. 

      True

    • B. 

      False

  • 7. 
    What's the following apparatus?
    • A. 

      Electrical ball

    • B. 

      Electrical generator

    • C. 

      Van De Graaff generator

    • D. 

      Power ball

  • 8. 
    This shows the stages of how a ___________ works
  • 9. 
    What happens to the CURRENT in a SERIES circuit
    • A. 

      It stays the same throughout

    • B. 

      It changes depending on equipment

    • C. 

      It usually stays the same

    • D. 

      Is usually changes

  • 10. 
    For a PARALLEL circuit, the current that leaves is the SAME as the current that returns. Current divides into half when it has 2 routes but it eventually meets in the end
    • A. 

      Yep

    • B. 

      Nope

  • 11. 
    Voltage is a measure of how big of a push the electrons are given as they leave the cell of battery, can also be thought of as energy
    • A. 

      True

    • B. 

      False

  • 12. 
    Select some things which can produce the voltage
    • A. 

      Cell

    • B. 

      Lamp

    • C. 

      Battery

    • D. 

      Power supply

  • 13. 
    How does voltage work in a series circuit?
    • A. 

      The sum of voltages across each component add up to the voltage across the entire battery

    • B. 

      The voltage is the same throughout

  • 14. 
    For a PARALLEl circuit, the VOLTAGE across the battery is the same as the voltage across each branch
    • A. 

      True

    • B. 

      False

  • 15. 
    What does Ohm's Law tell us?
    • A. 

      As the voltage increases, the current also increases - proportionally

    • B. 

      As the voltage increases, the current decreases - proportionally

    • C. 

      Technically, its none of the above

  • 16. 
    In general, for a series circuit, what's the total resistance, R_T?
    • A. 

      R_T = (R_1) * (R_2) * (R_3) * ... * (R_n)

    • B. 

      R_T = (R_1) / (R_2) / (R_3) / ... / (R_n)

    • C. 

      R_T = R_1 + R_2 + R_3 + ... + R_n

    • D. 

      1/(R_T) = 1/(R_1) + 1/(R_2) + 1/(R_3) + ... + 1/(R_N)

  • 17. 
    In general, for a parallel circuit, whats the total resistance R_T?
    • A. 

      R_T = R_1 + R_2 + R_3 + ... + R_n

    • B. 

      1/(R_T) = 1/(R_1) + 1/(R_2) + 1/(R_3) + ... + 1/(R_n)

    • C. 

      R_T = (R_1) * (R_2) * (R_3) * ... * (R_n)

    • D. 

      R_T = (R_1) / (R_2) / (R_3) / ... / (R_n)

  • 18. 
    Calculate the total resistance. Leave your answer as a fraction. Your answer is in Ω (Ohms). (Here's a hint: 1/(R_t) = 1/12 + 1/18 + 1/6 = 3/36 + 2/36 + 6/36)