Electrostatics Question 299

Question: Electric charges $ q,q,-2q $ are placed at the corners of an equilateral triangle $ ABC $ of side $ l $ . The magnitude of electric dipole moment of the system is [MP PMT 1994]

Options:

A) $ ql $

B) $ 2ql $

C) $ \sqrt{3}ql $

D) $ 4ql $

Show Answer

Answer:

Correct Answer: C

Solution:

$ p _{net}=\sqrt{p^{2}+p^{2}+2pp\cos 60{}^\circ }=\sqrt{3}p=\sqrt{3}ql $ (Q p = ql)



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