KVPY Sample Paper KVPY Stream-SX Model Paper-21

  • question_answer
    In the Q.26, the current \[{{I}_{1}}\] long after pressing the switch is

    A) 2.5 amp

    B) 2 amp

    C) 5/6 amp

    D) 5/3 amp

    Correct Answer: A

    Solution :

    After long time induced emf in L become zero so, L is replaced with simple conducting wire. So new equivalent circuit is shown.
    \[{{R}_{eq}}=2+{{R}_{eq}}\] of 6 &\[3\Omega =2+\frac{6\times 3}{6+3}=2+2=4\]

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