12th Class Physics Magnetism Question Bank Case Based (MCQs) - Magnetism and Matter

  • question_answer
    The net magnetic flux through any closed surface, kept in a magnetic field is:

    A) zero                              

    B) \[\frac{{{\mu }_{0}}}{4\pi }\]

    C)             \[4\pi {{\mu }_{0}}\]    

    D)             \[\frac{4{{\mu }_{0}}}{\pi }\]

    Correct Answer: A

    Solution :

    (a) zero The net magnetic flux through a closed surface will be zero, i.e. \[\oint{\overrightarrow{B}}\cdot d\,\overrightarrow{S}=0\], because there are no magnetic monopoles.


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