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-   -   (Another) Electric field in a sphere (http://physicshelpforum.com/electricity-magnetism/4872-another-electric-field-sphere.html)

 BadAtPhysics Sep 8th 2010 03:48 PM

(Another) Electric field in a sphere

A positively charged metal sphere of radius a is at the center of a metal shell of radius b. The spheres carry equal and opposite charges +Q. Find the electric field as a function of the distance r from the common center for (a) a < r < b, and (b) r > b.

Like the other problem, I have no idea how to start. And again, this should have something to do with E = kQ/r^2, but I don't know what the problem is really asking. I think my real problem with these physics questions is that I don't understand what they want me to do! Please help!

 vyomictor Sep 8th 2010 11:38 PM

i suggest you to read some primary book to solve these problem...book by RESNICK, HALLIDAY and WALKER will be helpful....................

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