Electricity Exam: Physics Trivia Quiz!

25 Questions | Total Attempts: 98

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Electricity Exam: Physics Trivia Quiz!

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Questions and Answers
  • 1. 
    An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:
    • A. 

      3.2A

    • B. 

      4.2A

    • C. 

      9.2A

    • D. 

      8.2A

  • 2. 
    In the given figure, the resistors:
    • A. 

      6 Ω, 3 Ω and 9 Ω are in series

    • B. 

       9 Ω and 6 Ω are in parallel and the combination is in series with 3 ohm

    • C. 

        3 Ω, 6 Ω and 9 Ω are in parallel

    • D. 

       3 Ω and 6 Ω are in parallel and the combination is in series with 9 Ω

  • 3. 
    Electric power is inversely proportional to:
    • A. 

      Resistance

    • B. 

      Voltage

    • C. 

      Current

    • D. 

      Temperature

  • 4. 
    Three resistors of 1 Ω, 2 ohms,s, and 3 Ω are connected in parallel. The combined resistance of the three.
    • A. 

      Equals 3 Ω

    • B. 

      Less than 2Ω

    • C. 

      Equals 2 Ω

    • D. 

      Mor than 3 Ω

  • 5. 
    Point to be kept in mind for verification of Ohm’s Law is:
    • A. 

      Ammeter and voltmeter should be connected in series

    • B. 

      Ammeter should be connected in series and voltmeter in parallel

    • C. 

      Ammeter should be connected in parallel and voltmeter in series

    • D. 

      Ammeter and voltmeter should be connected in parallel

  • 6. 
    There is the wire of length I and cross-section A. Which of the given have the least resistance.
    • A. 

      Length doubled, Area halved

    • B. 

      Length tripled, Area doubled

    • C. 

      Length halved, Area doubled

    • D. 

      The original wire

  • 7. 
    A car headlight bulb working on a 12 V car battery draws a current of 0.5 A. The resistance of the light bulb is:
    • A. 

      0.5 Ω

    • B. 

      B. 6 Ω

    • C. 

      12 Ω

    • D. 

      24Ω

  • 8. 
    The resistance of a conductor depends directly on its ……… and ...... , inversely on its ……… 
  • 9. 
    According to ohm's Law, the ............ across the ends of a resistor is directly proportional to the ……… flowing through it, provided its ........... remains constant.
  • 10. 
    If the amount of electric charge passing through a conductor in 10 minutes is 300 C, the current flowing is:
    • A. 

      2A

    • B. 

      0.5A

    • C. 

      300A

    • D. 

      30A

  • 11. 
    An electric fuse works on the:
    • A. 

      Chemical effect of current

    • B. 

      Magnetic effect of current

    • C. 

      Lightning effect of current

    • D. 

      Heating effect of current

  • 12. 
    From the graph:
    • A. 

      Electric power

    • B. 

      Voltage

    • C. 

      Resistivity

    • D. 

      Resistance

  • 13. 
    Calculate Resistance.
    • A. 

      150 Ω

    • B. 

      1.5 Ω

    • C. 

      11.5 Ω

    • D. 

      15 Ω

  • 14. 
    If in the given arrangement, the three resistors are to be replaced by a single resistor. What will be the value of this resistor?
    • A. 

      6 Ω

    • B. 

      18 Ω

    • C. 

      12 Ω

    • D. 

  • 15. 
    In An Electrical Circuit Three Incandescent Bulbs A, B And C Of Rating 40 W, 60 W And 100 W Respectively Are Connected In Parallel To An Electric Source. Which Of The Following Is Likely To Happen Regarding Their Brightness?
    • A. 

      All the three bulbs glow with same brightness

    • B. 

      Bulb A glows with more brightness than bulb B and C

    • C. 

      Bulb C glows with more brightness than A and B

    • D. 

      Bulb B glows with more brightness than A and B 

  • 16. 
    When a current 'I' flows through a resistance 'R' for time 't' the electrical energy spent is given by:
    • A. 

      I 2 Rt

    • B. 

      IRt

    • C. 

      2 It

    • D. 

      2 RI

  • 17. 
    Which one connected properly?
    • A. 

      Ii

    • B. 

      Iii

    • C. 

      I

    • D. 

      Iv

  • 18. 
    The resistance of a conductor increases with- I: Increase in length II: Increase in volume III: Decrease in area iv: Temperature
    • A. 

      I&II

    • B. 

      I&III

    • C. 

      II&IV

    • D. 

      III&IV

  • 19. 
    The rheostat is used in the circuit to :
    • A. 

      Increase the magnitude of current only

    • B. 

      Decrease the magnitude of current only

    • C. 

       increase or decrease the magnitude of current

    • D. 

      To increase resistance only

  • 20. 
    The total resistance?
    • A. 

      9 Ω

    • B. 

      12.6 Ω

    • C. 

      12 Ω

    • D. 

      15.6 Ω

  • 21. 
    The work done to Move a  unit charge from one point to another point is called?
    • A. 

      Resistance

    • B. 

      Electric power

    • C. 

      Potential difference

    • D. 

      Electric current

  • 22. 
    SI unit of electrical Potential Difference is Ampere (A).
    • A. 

      True

    • B. 

      False

  • 23. 
    The commercial unit of electric power.
    • A. 

      Watt

    • B. 

      Kilo watt hour

    • C. 

      Kilo watt

    • D. 

      Joule

  • 24. 
    We prefer parallel connection over series connection because:
    • A. 

      The voltage will not be same so that electrical devices work properly

    • B. 

      It offers less resistance and all the device work properly

    • C. 

      It offers more resistance if one device fails to work none of the device work

    • D. 

      It offers more resistance and more power is dissipated

  • 25. 
    The relation between potential difference v and electrical current I given by:
    • A. 

      Ohm's law

    • B. 

      Joules law of heating

    • C. 

      Series connection

    • D. 

      Parallel connection

    • E. 

      None of the above

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