Four charges +q, +q, -q, -q are fixed respectively at the corners of A, B, C and D of a square of side 'a' arranged in the given order. Calculate the electric potential and intensity at O (Center of square). If E and F are the midpoints of sides BC, CD respectively, what will be the work done by external agent in carrying a charge Q slowly from O to E and from O to F ?

Four particles with charges + q, + q, -q, -q are placed respectively at the comers. A, B, C, D of a sqµare of side 'a' arranged in given order. Calculate the electric potential and intensity at point 0, the center of the square. If E and Fare the midpoints of the sides BC and CD respectively, what will be the work done in displacing a charge Qfrmil OtoE and from Oto F? [0, -(4K qQ)/(a) ((sqrt(5)-1)/(sqrt(5)))]1

Four charges +q, +q, -q, and -q are placed, respectively, at the corners A,B,C, and D of a square of side a , arranged in the given order. E and F are the midpoints of sides BC and CD , respectively, O is the center of square. The electric potential at O is.

Four charges +q, +q, -q, and -q are placed, respectively, at the corners A,B,C, and D of a square of side a , arranged in the given order. E and F are the midpoints of sides BC and CD , respectively, O is the center of square. The electric potential at O is.

Four charges +q, +q, -q, and -q are placed, respectively, at the corners A,B,C, and D of a square of side a , arranged in the given order. E and F are the midpoints of sides BC and CD , respectively, O is the center of square. The electric field at O is.

Four charges +q, +q, -q, and -q are placed, respectively, at the corners A,B,C, and D of a square of side a , arranged in the given order. E and F are the midpoints of sides BC and CD , respectively, O is the center of square. The electric field at O is.

Four charges of +q, +q, +q and +q are placed at the corners A, B, C and D of a square of side a. Find the resultant force on the charge at D