Choose the correct statement:
Three charges $2q, q, -q$ are located at the vertices of an equilateral triangle. At the centroid:

both field and potential are non-zero

The correct answer is Option (2) → potential is zero but the field is non-zero

The electric field is a vector quantity, and its direction depends on the distribution of charges. Due to a symmetry in charge magnitude $(+2q, +q, -q)$, the electric field at the centroid is non-zero.

Potential at the centroid is -

$V=\frac{K}{r}(2q)+\frac{K}{r}(q)-\frac{K}{r}(q)$

$≠0$