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

  • question_answer
    An electron is moving on a circular path of radius r with speed v in a transverse magnetic field B. e/m for it will be [MP PMT 2003]

    A)            \[\frac{v}{Br}\]                    

    B)            \[\frac{B}{rv}\]

    C)            Bvr

    D)            \[\frac{vr}{B}\]

    Correct Answer: A

    Solution :

               \[r=\frac{mv}{eB}\Rightarrow \frac{e}{m}=\frac{v}{rB}\]


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