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

  • question_answer
    An electric dipole when placed in a uniform electric field \[E\] will have minimum potential energy, if the positive direction of dipole moment makes the following angle with \[E\] [CPMT 1981; MP PMT 1987]

    A)                    \[\pi \]                            

    B)            \[\pi /2\]

    C)                    Zero

    D)                                      \[3\pi /2\]

    Correct Answer: C

    Solution :

                       Potential energy \[=~pE\,\text{cos}\theta \] When \[\theta \,=0\]. Potential energy = ? pE (minimum)


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