3-point charges q are placed at the corner of equilateral triangle. Another charge -Q is placed at the centroid of the triangle. If the force on each charge q vanishes, the ratio of Q/q is?
1
\(\frac{1}{\sqrt{3}} \)
2
\(\sqrt{3} \)
3
\(\frac{1}{3 \sqrt{3}} \)
4
\(\frac{1}{3} \)