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 charges +Q, -Q, +Q, -Q are placed at the corners of a square taken in order. At the centre of the square

Charges 1q, 2q, 3q and 4q are placed at the corners A,B,C and D of a square as shown in Fig. The direction of electric field at the centre of square is along :

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

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 mangniture of the force on the charge at B will be

Equalc harges q are placed at four corners A, B, C and D of a square of length a. the magnitude of the force on the charge at B will be