JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Mock Test - Magnetics

  • question_answer
    An infinitely long current carrying wire carries current i. A charge of mass m and charge q is projected with speed v parallel to the direction of current at a distance r from it. Then, the radius of curvature at the point of projection is

    A) \[\frac{2rmv}{q{{\mu }_{0}}i}\]

    B) \[\frac{2\pi rmv}{q{{\mu }_{0}}i}\]

    C)  r

    D) Cannot be determined

    Correct Answer: B

    Solution :

    [b] \[F=qvB=\frac{qv{{\mu }_{0}}i}{2\pi r}\] \[\frac{m{{v}^{2}}}{R}=\frac{qv{{\mu }_{0}}i}{2\pi r}\Rightarrow R=\frac{2\pi rmv}{q{{\mu }_{0}}i}\]


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