#### somasimple

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from this page (Cylindrical Capacitor) =>

http://www.phys.uri.edu/~gerhard/PHY204/tsl105.pdf

What happens when L is <= b? Does the computation change?

and from this page

http://www.physics.umd.edu/perg/abp/TPProbs/Problems/E/E52.htm

The capacitor is simplified to a plane one.

Is it normal that the first equation is ignored, since it doesn't give the same results?