[单选题]
Two positive charges3 k6;ma;j h+zhax:u+hhbs w*k of mag2 b)xsu3f66okaj wfk:wdcov5:t g2. gnitude 2C and 8C respectively are placed 9cm apart. A third charge is introduced between the two cwc:6)oo uf 6b3ft52.k 2:gsxkdajwv g harges as shown below;
At what separation, X, from the 2C charge is the electric field strength equal to zero?
