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Homework Statement
Charge is uniformly distributed along a circular plate (radius R). surface charge is [tex]\sigma[/tex].
a) Determine the electric potential on the plates axis distance x from the center of the plate.
b) Calculate the electric field on the axis distant >x from the center of the plate.
The Attempt at a Solution
http://www.aijaa.com/img/b/00132/3756420.jpg
http://www.aijaa.com/img/b/00540/3756421.jpg
I couldn't get the E field any "cleaner" and in a I wasn't sore about the substitution of A (i.e. can I do it like that). fire my methods correct?
And don't mind my handwriting, MS Paint isn't that responsive.
Edit: Holy crap! Can I resize the images?
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