Equal charges `q` are placed at the four corners `A,B,C,D`of a square of length `a`. The magnitude of the force on the charge at `B` will be

Equal charges q are placed at the three corners B, C, D of a square ABCD of side a. The potential at A is

Equal charges q are placed at the three corners B, C, D of a square ABCD of side 'a'. The ratio of potential at A to centre O is

q,2q, 3q and 4q charges are placed at the four corners A,B,C and D of a square. The field at the centre P of the square has the direction parallel to

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

Consider four equal charges (q, each) placed on the corners of a square with side a. Determine the magnitude and direction of the resultant force on the charge on lower right corner.

Four equal charges Q are placed at the four corners of a square of each side is 'a'. Work done in removing a charge -Q from its centre to infinity 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. .

Equal charges q are placed at the vertices A and B of an equilatral triangle ABC of side a . The magnitude of electric field at the point C is

Four charges are arranged at the corners of a square ABCD as shown in the figure. The force on the charge kept at the centre O will be:

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?