JEE Main & Advanced Physics Electro Magnetic Induction JEE PYQ-Electro Magnetic Induction

  • question_answer
    In the circuits and switches \[{{S}_{1}}\] and \[{{S}_{2}}\] are closed at t = 0 and are kept closed for a long time. The variation of currents in the two circuits for \[t\ge 0\] are roughly shown by (figures are schematic and not drawn to scale):                         [JEE ONLINE 10-04-2015]

    A)

    B)

    C)

    D)

    Correct Answer: B

    Solution :

    [b] Circuit
    a --
    \[i={{i}_{0}}{{e}^{-t/RC}}\]for b \[i={{i}_{0}}\left( 1-{{e}^{-t/L/R}} \right)\]
    So


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