Ans wer C:-Calculate the force on the charge q due to yellow and red charge.{:[ vec(F)_("yellow on "q)=k(q_("yellow ")*q)/(d_(2)^(2)) hat(r)],[ vec(F)_("red on "q)=k(q_("red ")*q)/(d_(1)^(2))(-i)]:}The net force on blue sphere in re-direction is equal to zero, that means the x-comporent of force dew to yellow, red c ... See the full answer