TS EAMCET Medical 29 Sept 2020 Shift 1 Paper

Three particles of charges 1 x 10−8 C, 8.0 x 10−8 C and 27 x 10−8 C are kept fixed on the x - axis at point x= 10 cm. 20 cm and 30 cm respectively. The magnitude of the electric force acting on a 1 C charge placed at x = 0.
(Assume — — = 9 x 109 NC−2m2)