(A) What is the magnitude of the electric field due to the rod at z = 0?

Posted on 2016-03-02 19:03:00 in Physics by CAROLINE

A thin nonconducting rod with a uniform distribution of positive charge Q is bent into a circle of radius R. The central perpendicular axis through the ring is a z-axis, with the origin at the center of the ring. 

(b) What is the magnitude of the electric field due to the rod at z = ∞? 
N/C 

(c) In terms of R, at what positive value of z is that magnitude maximum? 
R 

(d) If R = 1.00 cm and Q = 9.00 µC, what is the maximum magnitude? 
N/C

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