if 3 equel and same electric charges are forming an equilateral triangle, the whre will the potential be 0. (dont give the ans at the centre-thats wrong)

let three charges are placed at the vertices of equilateral triangle then net potential at any point is given by

V = V₁ +V₂ + V₃

V = kq/r , so

V₁,V₂,V₃ = Kq/r₁ , kq/r₂ , kq/r₃

V = kq(1/r₁+1/r₂+1/r₃)

since charges are same & of same sign so kq is taken out of brakett now

V is 0 if q is 0 or if r₁,r₂,r₃ all are infinity

so , the only condition is that a point shoud be at infinity ...

inside the triangle only electric field can be 0 not potential...

Approved