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JEE Main & Advanced Physics Electro Magnetic Induction Question Bank Static EMI

  • question_answer
    A coil of inductance 40 henry is connected in 0series with a resistance of 8 ohm and the combination is joined to the terminals of a 2 volt battery. The time constant of the circuit is                                                   [MP PET 2000]

    A)            40 seconds                            

    B)            20 seconds

    C)            8 seconds                              

    D)            5 seconds

    Correct Answer: D

    Solution :

               Time constant \[=\frac{L}{R}=\frac{40}{8}=5\,\,\sec .\]


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