question_answer

ABC is an equilateral triangle. Charges +q are placed at each comer. The electric intensity at Owill be-

A) \[\frac{1}{4\pi {{\varepsilon }_{0}}}\,\,\frac{q}{{{r}^{2}}}\]                

B) \[\frac{1}{4\pi {{\varepsilon }_{0}}}\,\,\frac{q}{r}\]

C) Zero                             

D) \[\frac{1}{4\pi {{\varepsilon }_{0}}}\,\,\frac{3q}{{{r}^{2}}}\]

Correct Answer: C

Solution :

\[{{E}_{net}}=0\]