Four identical charges Q are fixed at the four corners of a square of side a. The electric field at a point P located symmetrically at a distance `a//sqrt(2)` from the center of the square is

Four identical point charges q are placed at four corners of a square of side a. Find the potential energy of the charge system. .

Four point charges are placed at the corners of a square of side l. Calculate potential at the centre of square.

Four charges Q-Q, Q-Q are placed at the corners of a square as shown . The potential is zero at points

A point charge Q is placed at the corner of a square of side a. Find the flux through the square.

The magnetic field due to a current carrying square loop of side a at a point located symmetrically at a distance of a/2 from its centre (as shown is)

Four identical charges q are placed at the corners of a square of side a. Find the potential energy of one of the charges due to the remaining charges. .

Three charges, each equal to q, are placed at the three. corners of a square of side a . Find the electric field at. the fourth corner.

Four small particles charged with equal positive charges Q each are arranged at the four corners of a horizontal square of side a. A unit positive charge mass m is placed at a point P, at a height h above the centre of the square. What should be the magnitude of charge Q in order that the unit charge remain in equilibrium

A system consists of charges +q and +q at the opposite corners of a square of sides 2a and -q and -q at the other two corners . Calculate the potential and field at a distance r from the centre of the square along a line parallel to the two sides of the square . Assume a lt lt r .