two positive charge q1 and q2 are located at the points with radius vector r1 and r2.find the negaive charge q3 and a radius vector r3 of the point at which it has to be placed for the force acting on each of the three charges to be equal to zero.
two positive charge q1 and q2 are located at the points with radius vector r1 and r2.find the negaive charge q3 and a radius vector r3 of the point at which it has to be placed for the force acting on each of the three charges to be equal to zero.