Physics

Physics

Problem

Three charges +Q+Q , qq , +Q+Q are placed respectively, at distance, d/2d/2 and dd from the origin, on the xx -axis. If the net force experienced by +Q+Q , placed at x=0x = 0 , is zero, then value of qq is: [Main 9 Jan. 2019 (I)] a. −Q/4-Q/4 b. +Q/2+Q/2 c. +Q/4+Q/4 d. −Q/2-Q/2

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