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JEE Main & Advanced AIEEE Solved Paper-2007

  • question_answer
    A current\[^{20}{{C}_{0}}{{-}^{20}}{{C}_{1}}{{+}^{20}}{{C}_{2}}{{-}^{20}}{{C}_{3}}+....{{+}^{20}}{{C}_{10}}\]flows along the length of an infinitely long, straight, thin walled pipe. Then,       AIEEE  Solved  Paper-2007

    A)  The magnetic field is zero only on the axis of the pipe

    B)  The magnetic field is different at different points inside the pipe

    C)  The magnetic field at any point inside the pipe is zero

    D)  The magnetic field at all points inside the pipe is the same, but not zero

    Correct Answer: C

    Solution :

    Using Ampere's circuital law the magnetic field at any point inside the pipe is zero.\[\frac{1}{\sqrt{2}}\]


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