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B-field for a half-infinitely long wire
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[QUOTE="ChiralSuperfields, post: 6847353, member: 731016"] Thank you for your reply [USER=334404]@haruspex[/USER]! ##\mu_0## is the magnetic permeability of free space ##I## is the current in the vertical wire ## ds ## is the length element of the wire ## r^2 ## is the distance from each ##ds## to point ##P## I think the thing that was tripping me up was that I thinking that we could call the infinite length to be ##a## which would mean that ##\tan\theta = \frac {x} {a} ## however this would be zero since ## a \rightarrow \infty ## then ##\tan \theta \rightarrow 0 ##. I was then going to solve for ##\theta## and have limits of integration to be angles ## \theta_1 = 0 ## and ## \theta_2 = \frac {\pi} {2} ##. However now I think I should get ## r ## in terms of ## \sin\theta ##. I will try to solve that now. Is my reasoning correct so far? [/QUOTE]
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B-field for a half-infinitely long wire
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