Four charges of `6 muC,2muC,-12muC and 4 muC` are placed at the corners of a square of side 1m. The square is in x-y plane and its centre is at origin. Electric potential due to these charges is zero everywhere or the line

Answer

A, C

Explanation

Here total charge is zero

Any point on z-axis, having the same distance from the each vertex of square. So the potential due to all is zero at the point.