A) \[{{r}^{-2}}\]
B) \[{{r}^{-1}}\]
C) r
D) \[{{r}^{o}}\]
Correct Answer: A
Solution :
The electric potential of electric dipole on its axial position is \[V=\frac{P}{4\pi {{\varepsilon }_{0}}{{r}^{2}}}\] where p = dipole moment or \[V\propto \frac{1}{{{r}^{2}}}\] or \[V\propto {{r}^{-2}}\]
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