KVPY Sample Paper KVPY Stream-SX Model Paper-22

  • question_answer
    A conducting loop is being pulled with speed \[v\] from region I of magnetic field to region II. If resistance of the loop is \[R\], current induced in the loop at the instant shown is

    A) \[\frac{{{B}_{0}}\ell v}{R},\]Clockwise

    B) \[\frac{{{B}_{0}}\ell v}{R},\]anticlockwise

    C) \[\frac{3{{B}_{0}}\ell v}{R},\]clockwise

    D) \[\frac{3{{B}_{0}}\ell v}{R},\]anticlockwise

    Correct Answer: C

    Solution :

    \[={{B}_{0}}v\ell +2{{B}_{0}}v\ell \]
    \[=3{{B}_{0}}v\ell \]
    \[\therefore \] \[i=\frac{e}{R}=\frac{3{{B}_{0}}v\ell }{R}\]

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