Homework Help: Science

Posted by Sam on Thursday, May 22, 2008 at 11:56pm.

I wanted the electric field between concentric cylinders, and got anexpression using Gauss' Law that considers only charge enclosed. Thus, there was no influence due to the outer cylinder.
But, if we consider the limiting case of the inner cylinder having very large curvature and the outer cylinder not too far off from it..i.e a is very large and b is just larger than a.
I assume that then the electric field between the cylinders can be considered as a flat plate analogy, which gives some other answer of the field between(for flat plate analogy, the outer cylinder also supplies electric field but it had no influence watsoever when we considered the normal cases)...Please help. I cant figure out what's wrong.

Science - SraJMcGin, Friday, May 23, 2008 at 9:35am
Thank you for using the Jiskha Homework Help Forum. Did you see the following:

1. http://www.davidpace.com/physics/em-topics/capacitance-cylinders.htm

2. http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6X3D-4F490F8-2&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=c9813c1b1f4d49a74442b2523800a508

3. (PDF file to download):
ocw.mit.edu/NR/rdonlyres/Physics/8-02TSpring-2005/3BC

4. http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=AJPIAS000074000004000255000001&idtype=cvips&gifs=yes

5. (PDF file):
ieeexplore.ieee.org/iel6/8247/25852/01147797.pdf

5. (Gauss' Law): http://en.wikipedia.org/wiki/Gauss's_law

6. (Gauss' Law): http://teacher.pas.rochester.edu/phy122/Lecture_Notes/Chapter24/Chapter24.html

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