Electrostatics Question 296
Question: The electric field due to a dipole at a distance$ r $ on its axis is [MP PMT 1993; RPET 2001; MP PET/PMT 2002; BCECE 2003]
Options:
A) Directly proportional to $ r^{3} $
B) Inversely proportional to $ r^{3} $
C) Directly proportional to $ r^{2} $
D) Inversely proportional to $ r^{2} $
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Answer:
Correct Answer: B
Solution:
$ E=\frac{1}{4\pi {\varepsilon _{0}}}.\frac{2p}{r^{3}} $