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Oct 2, 2022 at 1:29 comment added Níckolas Alves Another suggestion: add a reference from Griffiths for the very first equation in your post (for example, "Griffiths Eq. (X.Y) states that") so we know exactly which result you are quoting. In that way, it is easier to understand what is your difficulty right now. If that equation isn't exactly written on Griffiths (it isn't, at least not for this case), add in why you believe it to be correct
Oct 2, 2022 at 1:27 comment added Níckolas Alves @Kman3 To get some clarity on why the right formula solves your problem, you must first explain why you think your formula was right in the first place. I just re-read your question and I couldn't really understand why you used the version you used. Clarifying this might make the post more adequate for answering as well
Oct 1, 2022 at 23:54 comment added Kman3 Thank you for your response. When I asked the question I knew two things: (1) Gauss' law provides the answer (after all, the answer I compare my answer to is from the solution manual, which uses Gauss' law); (2) There is a formula for the electric field of a volume charge, of which a sphere is one. I understand that I wrote the formula incorrectly, but I explained why I don't think Griffiths' formulation is necessary in my spherical coordinate system and didn't get a response. If I get some clarity as to why the right formula solves my problem, of course I will use it. But there isn't any.
Oct 1, 2022 at 22:16 history answered Níckolas Alves CC BY-SA 4.0