JEE Main & Advanced Physics Magnetic Effects of Current / करंट का चुंबकीय प्रभाव Question Bank Self Evaluation Test - Moving Charges and Mangetism

  • question_answer
    A particle is projected in a plane perpendicular to a uniform magnetic field. The area bounded by the path described by the particle is proportional to

    A) the velocity     

    B)        the momentum

    C) the kinetic energy           

    D) None of these

    Correct Answer: C

    Solution :

    [c] As \[r=\frac{mv}{qB}=\frac{P}{qB}\] \[\therefore \,\,\,\]Area,  \[A=\pi {{r}^{2}}=\pi {{\left( \frac{P}{qB} \right)}^{2}}=\frac{\pi {{p}^{2}}}{qB}=\frac{2m\pi }{qB}K\]


You need to login to perform this action.
You will be redirected in 3 sec spinner