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JEE Main & Advanced Physics Magnetism Question Bank Earth's Magnetism

  • question_answer
    Earth's magnetic field always has a horizontal component except at or Horizontal component of earth's magnetic field remains zero at                                                  [CPMT 1971, 81, 83]

    A)            Equator                                  

    B)            Magnetic poles

    C)            A latitude of 60o                  

    D)            An altitude of 60o

    Correct Answer: B

    Solution :

               At magnetic poles, the angle of dip is 90o. Hence the horizontal ooooooooooooooooooocomponent \[{{B}_{H}}=B\cos \theta =0.\]


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