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Gee Wiz
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Homework Statement
A nonconducting, solid sphere of radius a is placed at the center of a spherical conducting shell of inner radius b (> a) and outer radius c, as shown in the figure below. A charge +Q is distributed uniformly through the sphere, which thus carries a charge density ρ (C/m3). The outer shell carries a total charge -3Q.
Find the electric field E(r) within the solid sphere, i.e., at a radius r < a
Homework Equations
∫EdA=Qenclosed/Eo
The Attempt at a Solution
E*4∏r^2=(ρ*(4/3)*∏*a^3)/Eo
I thought I knew what i was doing, but now I'm not quite so sure. I know what i have above is not the correct answer.