(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Two concentric plastic spherical shells carry uniformly distributed charges, Q on the inner shell and -Q on the outer shell. Find the electric field (a)Inside the smaller shell, (b)between the shells, and (c) outside the larger shell

2. Relevant equations

integration(E * n)dA = (4pi) (k) (Qenclosed)

3. The attempt at a solution

In order to get hteh electric field between the shells, we can say that

[abs(E) * abs(n) cos delta](4pi) r^2 = (4pi) (k) (Qenclosed)

and working out the algebra it comes out to be

E = kQ/pi r^2

but what about for the charge outside the larger shell and the charge inside the smaller charge???

Is it safe to say that the we need to divide by 2 for the smaller shell and multiply by 2 for the large shell???

Thanks

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# Homework Help: Calculating electric fields

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