JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Motion of Charged Particle In Magnetic Field

  • question_answer
    When a charged particle enters a uniform magnetic field its kinetic energy           [MP PMT 2001; MP PET 2002]

    A)            Remains constant              

    B)            Increases

    C)            Decreases                             

    D)            Becomes zero

    Correct Answer: A

    Solution :

               Since \[\overrightarrow{F}\] and \[\overrightarrow{v\,}\] are perpendicular to each other work done by force is zero. Hence K.E. is constant.


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