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?

Five point charges, each of value +q are placed on five vertices of a regular hexagon of side Lm. What is the magnitude of the force on a point charge of value -q coulomb placed at the centre of the hexagon?

Five point charges, each of value +q are placed on five vertices of a regular hexagon of side Lm. What is the magnitude of the force on a point charge of value -q coulomb placed at the centre of the hexagon?

Five point charges each of value +q coulomb are placed on five vertices of a regular hexagon of side L metre. What will be the magnitude of the force on a point charge of value -q coulomb placed at the centre of the hexagon?

Five point charges, each of value +q coulomb, are placed on five vertices of a regular hexagon of side L meters. The magnitude of the force on the point charge of value -q coulomb, placed at the centre of the hexagon is…………….

Five point charges, each of value +q coul, are placed on five vertices of a regular hexagon of isde L meters. The magnitude of the force on the point charge of value -q coul, placed at the centre of the hexagen is…………….

Five point charges, each of value +q coul, are placed on five vertices of a regular hexagon of isde L meters. The magnitude of the force on the point charge of value -q coul, placed at the centre of the hexagen is…………….

Four charges, each of value q, are placed at the four corners of a square of side a. What is the potential at the centre of the square

Three point charges each equal to q are placed on the vertices of an equilateral triangle of side l. The potential energy of the system is