Electrostatics ALLEN 11. A charge q...
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Electrostatics ALLEN 11. A charge q is placed at the centroid of an equilateral triangle. Three equal charges Q are placed at the vertices of the triangle. The system of four charges will be in equilibrium ifq is equal to :- . 1

JEE/Engineering Exams
Physics
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介 二 ( left(operatorname{arsin}^{4} xright) ) ( x cos 30=a / 2 ) ( x=a / sqrt{3} ) ( frac{k Q_{c}^{2}}{a^{2}}+frac{k Q_{6}^{2}}{a^{2}}+frac{3 k Q^{4}}{a^{2}}=0 ) ( frac{3 x+9}{9^{x}}=frac{-2 x^{2}-2}{x^{2}} ) ( 3 q=-29 ) ( 9-frac{-28}{3} ) ( frac{k(0)^{2}}{a^{2}} frac{sqrt{3}}{2} x y=frac{-k g^{2}}{a^{2}} ) ( 9=frac{-8}{sqrt{3}}(A) )
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