Question

r is a distance of a point from the centre of a short dipole, then the electric field intensity due to the short dipole remains proportional to
a) r^2
b) r^3
c) r^-4
d) r^-3​

Answer 1

Explanation:

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Answer 2

Answer:

Electric field intensity due to short dipole remains proportional to $r^{-3}$

Explanation:

The electric field intensity due to an electric dipole is given by:

E = $\frac{1}{4\pi e_{0} }$ $\frac{2p}{r^{3} }$

where, p = dipole moment

$e_{0}$ = electrical permitivity of free space

r = distance from dipole

It is clear that,

E ∝ $\frac{1}{r^{3} }$

so, r = -3

hence this is the required solution.