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WB JEE Medical WB JEE Medical Solved Paper-2007

  • question_answer
    The electric potential due to a small electric dipole at a large distance r from the centre of the dipole is proportional to

    A)  r                                            

    B)  \[\frac{1}{r}\]

    C)  \[\frac{1}{{{r}^{5}}}\]                                    

    D)  \[\frac{1}{{{r}^{2}}}\]

    Correct Answer: D

    Solution :

                     \[{{V}_{axis}}=\frac{1}{4\pi {{\varepsilon }_{0}}}\times \frac{P}{{{r}^{2}}}\] or \[{{V}_{axis}}\propto \frac{1}{{{r}^{2}}}\]


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