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

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 potential at A is

Charges 5 mu C, -2muC, 3mu and -9mu are placed at the corners A,B,C and D of a square ABCD of side 1m. The net electric potential at the centre of th square is

Charges 5 mu C, -2muC, 3muCand -9muC are placed at the corners A,B,C and D of a square ABCD of side 1m. The net electric potential at the centre of th square 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

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 four corners A, B, C, D of a square of length a. The magnitude of the force on the charge at B will be

Three charges ,each of + 4 mu C ,are placed at the corners A,B,C of a square ABCD of side 1 m .The electric field at the centre O of a square ABCD of side 1 m .The electric field at the centre O of the square is

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