A thin non conducting rod with a uniform distribution of positive charge q is bent into a complete circle of radius R The central perpendicular axis through the ring in z axiswith the origin at the center of ring what is the magnitude of electri field due to rod at z=0 z=infinity in term of R At what positive value of z is that magnitude maximum? if r=2.0cm and q= 4.0micro columnb what is maximum magnitude
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Differentiating equation and setting equal to zero (to obtain the location where it is maximum) leads to
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