Q.

The electric field at a point on the equatorial plane at a distance r from the centre of a dipole having dipole moment  p→ is given by, (r >> separation of two charges forming the dipole, ϵ0 - permittivity of free space)

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a

E→=−P→4π∈0r3

b

E→=P→4π∈0r3

c

E→=2P→4π∈0r3

d

E→=−P→4π∈0r2

answer is A.

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Detailed Solution

Electric field in equitorial planeE→=−14πϵ0P→r3
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