Question

calculate the electric potential at the centre of a square of side 'a' which carries at its four corners charges q1 q2 q3 q4​

Answer 1

Answer:

Let the distance between each corner and the center of square be  x.

∴    s2=x2+x2             ⟹x=2s

Potential at the center due to charge at corner 1, V1=xkq=s2kq

The square is symmetric about its center.

Thus total potential at the center V=4V1=ks42q

hopes it helps u❤