AIIMS 2019 Physics Electric Field and Potential MCQ Question

At the center of the equilateral triangle formed by charges 2q, -q, and -q, the electric field is non-zero due to the unequal distribution of charge; the field contributions from the two -q charges cancel each other out, while the 2q charge contributes a net field directed away from it. However, the electric potential at that point is zero because the potential due to the positive charge (2q) is exactly canceled by the potentials due to the two negative charges (-q), which are equidistant from the center. Option A is incorrect because the potential is zero, not non-zero; Option C is incorrect since the electric field is not zero; and Option D is incorrect as the potential is zero.