https://gyazo.com/d502fb408d6224ffa70700cf047bad20 (link to problem: #4).
[moderator edit: Image inserted for clarity]
A total charge Q is distributed uniformly over rod length L. The rod is aligned on the x-axis, with one end at the origin and the other at point x=L.
a) calculate electric field at a point (0,D)
b) field at point (L/2,D)
q = lambda*length
The Attempt at a Solution
I was able to find the answer to letter a. However, I deduce that for b), the answer will only be the y-component of that found in a) as the x one cancel out. However, this is not the case as the answer key shows.
Thus, I tried doing the calculations and I still arrive at the y-component found in a).
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