A uniformly charged insulating square sheet of side length d has charge Q. A point charge q is placed at a distance d/2 normally from the intersection of diagonals of the sheet. Then,

The force of electrostatic repulsion acts on the point charge due to the sheet is $\frac{Qq}{2{\epsilon }_0{d}^2}$

The flux of electric field of the point charge that passes through the sheet is $\frac{q}{6{\epsilon }_0}$

The flux of electric field of the point charge that passes through the sheet is  $\frac{q}{12{\epsilon }_0}$

The force of electrostatic repulsion acts on the point charge due to the sheet is $\frac{Qq}{6{\epsilon }_0{d}^2}$