Four charges of 1 mC, 2mC, 3mC and- 6 mC are placed one at each corner of the square of side 1m. The square lies in the x-y plane with its centre at the origin.

Options

A. The electric potential is zero at the origin.
B. The electric potential is zero everywhere along the x-axis only on the sides of the square which are parallel to y axis.
C. The electric potential is zero everywhere along the z-axis for any orientation of the square in the x-y plane.
D. The electric potential is not zero along z-axis except at the origin.

Answer

A, C, D