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Asked by Prashant DIGHE | 27 Jan, 2020, 22:39: PM
answered-by-expert Expert Answer
It is assumed that the line joining points B and centre O makes angle 50o with y-axis.
 
Electric field Ex due to each charge along x-axis is given by
 
begin mathsize 14px style E subscript x space equals space fraction numerator negative 4 q over denominator 4 pi epsilon subscript o d squared end fraction cos 30 space plus space fraction numerator left parenthesis negative 2 q right parenthesis over denominator 4 pi epsilon subscript o d squared end fraction cos 30 plus fraction numerator 2 q over denominator 4 pi epsilon subscript o d squared end fraction sin 50 end style
 
begin mathsize 14px style E subscript x space equals space fraction numerator q over denominator 4 pi epsilon subscript o d squared end fraction open square brackets negative 4 space cos 30 space minus 2 space cos 30 plus 2 space sin 50 close square brackets space equals space fraction numerator negative 3.664 space q over denominator 4 pi epsilon subscript o d squared end fraction end style
Answered by Thiyagarajan K | 28 Jan, 2020, 07:38: AM

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