Punjab Medical Punjab - MET Solved Paper-2004

  • question_answer
    Intensity of an electric field \[E\] due to a dipole, depends on distance \[r\] as:

    A) \[E\propto \frac{1}{{{r}^{4}}}\]                 

    B) \[E\propto \frac{1}{{{r}^{3}}}\]

    C) \[E\propto \frac{1}{{{r}^{2}}}\]                 

    D) \[E\propto \frac{1}{r}\]

    Correct Answer: B

    Solution :

    Here : Electric field\[=E\] Distance               \[=r\] The electric field intensity due to dipole is                 \[E=\frac{1}{4\pi {{\varepsilon }_{0}}}\times \frac{2p}{{{r}^{3}}}\propto \frac{1}{{{r}^{3}}}\]


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