Four equal point charges, each of magnitude `+Q`, are to be placed in equilibrium at the corners of a square. What should be the magnitude and sign of the point charge that should be placed at the center of the square to do this job?

It is requird to hold four equal point charges +q in equilibrium at the corners of a square. Find the point charge that will do this, if placed at the centre of the square.

It is requird to hold four equal point charges +q in equilibrium at the corners of a square. Find the point charge that will do this, if placed at the centre of the square.

It is required to hod four equal point charges +q in equilibrium at the corners of a square . Find the point charge that will do this, if placed at the centre of the square.

Three point charges each of value + q are placed on three vertices of a square of side a metre. What is the magnitude of the force on a point charge of value -q coulomb placed at the centre of the square?

Three point charges each of value + q are placed on three vertices of a square of side a metre. What is the magnitude of the force on a point charge of value -q coulomb placed at the centre of the square?

Point charges each of magnitude Q are placed at three corners of a square as shown in the diagram. What is the direction of the resultant electric field at the fourth corner ?

IT si required to hold four equal point charges each having a charge Q=(8)/(7)(1-2sqrt(2))C in equilibrium at the corners of a square.Find the point charge in coulombs that will do this if placed at the centre of the square.

Four equal positive charges, each of value Q, are arranged at the four corners of a square of diagonal 2a. A small body of mass m carrying a unit positive charge is placed at height h above the center of the square. What should be the value of Q in order taht this vody may be in equilibrium?