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)
