Electrostatics Question 294

Question: The distance between the two charges +q and −q of a dipole is r . On the axial line at a distance d from the centre of dipole, the intensity is proportional to [CPMT 1977]

Options:

A) qd2

B) qrd2

C) qd3

D) qrd3

Show Answer

Answer:

Correct Answer: D

Solution:

Field along the axis of the dipole E=14πε0.2pd3=14πε0.2(q×r)d3;

E∝qrd3

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