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Electricity Quick check

Quiz by Nidhi Joshi Biyani

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5 questions
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  • Q1
    An electric bulb rated for 500 W at 100V is used in a circuit so that the bulb delivers 500W is _____ ohms.
    Question Image
  • Q2
    A heater is designed to operate with a power of 1000W in a 100V line. It is connected in combination with a resistance of 10 ohms and a resistance R, to a 100V mains as shown in the figure. What will be the value of R so that the heater operates with a power of 62.5W?
    Question Image
    2.5 ohms
    10 ohms
    25 ohms
    5 ohms
  • Q3
    What will be total resistance of the given circuit?
    Question Image
    5.66 ohms
    8.66 ohms
    33 ohms
    22 ohms
  • Q4
    What will be the resistance of the circuit before and after the key is closed?
    Question Image
    3R/2, 5R/2
    4R/3, 2R/5
    3R/2, 4R/3
    4R/3, 5R/2
  • Q5
    Equivalent resistance of the given circuit is 1.5 ohms then r is________ ohms.
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