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Physics Question on electrostatic potential and capacitance

Electric field strength E due to a short dipole at a distance r from it are related as :

A

E α r−1E\,\alpha\,r^{-1}

B

E α r−2E\,\alpha\,r^{-2}

C

E α r−3E\,\alpha\,r^{-3}

D

E α r−4E\,\alpha\,r^{-4}

Answer

E α r−3E\,\alpha\,r^{-3}

Explanation

Solution

E α1/r3E\,\alpha 1/r^{3}