Electric charges of `+ 10 mu C, + 5mu C, - 3mu C` and `+9 mu C` are placed at the corners of a square of side `sqrt(2) m` the potential at the centre of the square is

Electric charges of +10 muC,+5 muC,-3 muC and +8 muC are placed at the corners of a square of side sqrt(2) m, the potential at the centre of the square is

Three charges 2 mu C , -4 mu C and 8 mu C are places at the three vertices of an equilateral triangle of side 10 cm. The potential at the centre of triangle is

Four charges of 1mu C, 2mu C, 3mu C and -6 mu C are placed one at each corner of the square of side 1 m . The square lies in the x-y plane with its centre at the origin.

Four point charges q_(A) = 2 mu C , q_(B) = -5 mu C, q_(C) = -2 mu C and q_(D) = -5 mu C are located at the corners of a square ABCD of side 10 cm. What is the force on a charge of 1 mu C placed at the center of the square ?

Charge of 5 mu C each are placed at the corners of an equilateral triangle of side 10 cm. Then the force on each charge 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

28.Four point charges 1 mu C -2 mu C 3 mu C and -2 mu C are arranged on the four vertices of a square of side 1cm .The dipole moment of this charge assembly is 1) zero 2) sqrt(2)times10^(-8)C.m 3) 2sqrt(2)times10^(-8)C m 4) 2times10^(-8)C m

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