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JEE Main & Advanced Physics Electrostatics & Capacitance Question Bank Electric Dipole

  • question_answer
    For a dipole \[q=2\times {{10}^{-6}}\,C\] and \[d=0.01\,m\]. Calculate the maximum torque for this dipole if \[E=5\times {{10}^{5}}\,N/C\]                                                                                              [RPMT 2003]

    A)                    \[1\times {{10}^{-3}}N{{m}^{-1}}\]

    B)                                      \[10\times {{10}^{-3}}N{{m}^{-1}}\]

    C)                    \[10\times {{10}^{-3}}Nm\]

    D)                                      \[1\times {{10}^{2}}N{{m}^{2}}\]

    Correct Answer: C

    Solution :

                       \[{{\tau }_{\max }}=pE=q\,(2l)E\] \[=2\times {{10}^{-6}}\times 0.01\times 5\times {{10}^{5}}\] \[=10\times {{10}^{-3}}N\text{-}m\]


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