Question

Three identical charges, each having a value 1.0 x 10^-8 C, are placed at the corners of an equilateral triangle of side 20 cm. Find the electric field and potential at the centre of the triangle.

Answer 1

q = 1.0 × 10^–8 C, ℓ = 20 cm
E = ? V = ?
Since it forms an equipotential surface.
So the electric field at the centre is Zero.