Electrostatics Question 704
Question: Intensity of an electric field (E) depends on distance r, due to a dipole, is related as
Options:
A) $ E\propto \frac{1}{r} $
B) $ E\propto \frac{1}{r^{2}} $
C) $ E\propto \frac{1}{r^{3}} $
D) $ E\propto \frac{1}{r^{4}} $
Show Answer
Answer:
Correct Answer: C
Solution:
[c] Intensity of electric field due to a Dipole $ E=\frac{P}{4\pi {\varepsilon _{0}}r^{3}}\sqrt{3{{\cos }^{2}}\theta +1}\Rightarrow E\propto \frac{1}{r^{3}} $
