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12th Class Physics Magnetism Question Bank MCQs - Moving Charges and Magnetism

  • question_answer
    At any point, empty space surrounded by a toroid, the magnetic field is \[{{B}_{1}}\]. At any point, outside the toroid, the magnetic field is \[{{\operatorname{B}}_{2}}\].

    A) \[{{B}_{1}}\]>\[{{\operatorname{B}}_{2}}\]

    B) \[{{\operatorname{B}}_{2}}\]>\[{{B}_{1}}\]              

    C) \[{{B}_{1}}\]=\[{{\operatorname{B}}_{2}}\]

    D) \[{{B}_{1}}\]=\[{{\operatorname{B}}_{2}}\]=0

    Correct Answer: D

    Solution :

    Option [d] is correct. Explanation: As net current is zero, magnetic field at the empty space surrounded by toroid and outside the toroid is zero.               


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