Test Your Basic Electricity Knowledge Here In This Quiz

15 Questions

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Test Your Basic Electricity Knowledge Here In This 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. 

      0.92 A

    • B. 

      2.9 A

    • C. 

      9.2 A

    • D. 

      92 A

  • 2. 
    • A. 

      1/9 V

    • B. 

      1/2 V

    • C. 

      2V

    • D. 

      1V

  • 3. 
    Two electric bulbs have resistances in the ratio 1:2. If they are joined in series, the energy consumed in them is in the ratio.
    • A. 

      2:1

    • B. 

      1:2

    • C. 

      4:1

    • D. 

      1:1

  • 4. 
    • A. 

      Ammeter A

    • B. 

      Ammeter B

    • C. 

      Ammeter C

    • D. 

      Ammeter D

  • 5. 
    • A. 

    • B. 

    • C. 

    • D. 

      18Ω

  • 6. 
    If the current flowing through a fixed resistor is halved, the heat produced in it will become:
    • A. 

      One-fourth

    • B. 

      One-half

    • C. 

      Double

    • D. 

      Four times

  • 7. 
    Two bulbs marked 200 watt-250 volts and 100 watt-250 volts are joined in series to 250 volts supply. Power consumed in circuit is
    • A. 

      33 watt

    • B. 

      67 watt

    • C. 

      100 watt

    • D. 

      300 watt

  • 8. 
    What is the amount of current flowing through an electric press, if the amount of charge passing through a conductor in 10 minutes is 300 C?
    • A. 

      30 A

    • B. 

      0.3 A

    • C. 

      0.5 A

    • D. 

      5 A

  • 9. 
    When a current 'I' flows through a resistance 'R' for time 't' the electrical energy spent is given by
    • A. 

      IRt

    • B. 

      I2Rt

    • C. 

      IR2t

    • D. 

      I2R/t

  • 10. 
    V1, V2 and V3 are the potential differences across the 1Ω, 2Ω and 3Ω resistors in the following diagram, and the current is 5A. Which of the following shows the correct values of V1, V2 and V3 measured in volts?
    • A. 

      V1 =1, V2 = 2 and V3 = 3

    • B. 

      V1 =5, V2 = 10 and V3 = 15

    • C. 

      V1 =5, V2 = 2.5 and V3 = 1.6

    • D. 

      V1 =4, V2 = 3 and V3 = 2

  • 11. 
    A wire of resistance R1 is cut into five equal pieces. These five pieces of wire are then connected in parallel. If the resultant resistance of this combination be R2, then the ratio R1/ R2 is:
    • A. 

      1/25

    • B. 

      1/5

    • C. 

      5

    • D. 

      25

  • 12. 
    At a given time, a house is supplied with 100 A at 220 V. how many 75 W, 220 V light bulbs could be switched on in the house at the same time (if they are all connected in parallel)?
    • A. 

      93

    • B. 

      193

    • C. 

      293

    • D. 

      393

  • 13. 
    Keeping the potential difference constant, the resistance of the circuit is halved. The current will become:
    • A. 

      One-fourth

    • B. 

      Four times

    • C. 

      Half

    • D. 

      Double

  • 14. 
    When a 4 Ω resistor is connected across the terminals of a battery, the number of coulombs passing through the resistor per second is:
    • A. 

      0.3

    • B. 

      3

    • C. 

      4

    • D. 

      12

  • 15. 
    In the figure,
    • A. 

      6 W, 3 W and 9 W are in series

    • B. 

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

    • C. 

      3 W, 6 W and W are in parallel

    • D. 

      3 W, 6 W are in parallel and 9 W is in series