Charges `q, 2q,3q` and `4q` are placed at the corners `A,B,C` and `D` of a square as shown in the following figure. The directon of electric field at the centre of the square is along

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 :

Four charges are arranged at the corners of a square as shown in the figure. The direction of electric field at the centre of the square is along

Four point charges Q.q Q and q are placed at the corners of a square side 'a' as shown in the figures. Find the resultant electric force on a charge Q,

Four point charges +q,+q,-q and -q are placed on the corners of a square of side length 'a' as shown in the figure. The magnitude of electric field at a point which is at a distance x (gt gt a) from the centre along a line perpendicular to the plane of the square and passing through the centre is

Three charges of (+2q), (-q) and (-q) are placed at the corners A,B and C of an equilateral triangle of side a as shown in the adjoining figure. Then the dipole moment of this combination 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

Electric charges -q -q -q and 3q are placed at the corners of a square ABCD of length 1 as shown in figure.The magnitude of electric dipole moment of the system is

Four point charges Q, q, Q and q are placed at the corners of a square of side' a' as shown in the figure. Find the . (a) resultnat electric force on a charge Q and . (b) potential energy of this system.

Four point charges Q.q Q and q are placed at the corners of a square side 'a' as shown in the figures. Find the Potential energy of this system.