RAJASTHAN ­ PET Rajasthan PET Solved Paper-2011

  • question_answer
    The torque acting on a magnetic dipole of moment\[{{\mathbf{P}}_{m}}\]when placed in a magnetic field B is

    A)  \[{{P}_{m}}B\]            

    B)  \[{{\mathbf{P}}_{m}}\times \mathbf{B}\]

    C)  \[{{\mathbf{P}}_{m}}.\text{ }B\]           

    D)  None of these

    Correct Answer: B

    Solution :

     \[\tau ={{P}_{m}}\times B\]


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