12th Class Physics Sample Paper Physics Olympiad Sample Paper-3

  • question_answer Two concentric and coplanar circular coils have radii a and b \[(>>a)\] as shown in figure. Resistance of the inner coil is R. Current in the outer coil is increased from 0 to /, then the total charge circulating in the inner coil is

    A)  \[\frac{{{\mu }_{0}}l{{a}^{2}}}{2Rb}\]

    B)  \[\frac{{{\mu }_{0}}lab}{2R}\]

    C)  \[\frac{{{\mu }_{0}}l}{2a}\frac{\pi {{b}^{2}}}{R}\]   

    D) \[\frac{{{\mu }_{0}}lb}{2\pi R}\]

    Correct Answer: A

    Solution :

    Not Available  

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