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    Calculate the electric field everywhere.

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    A spherically symmetric charge density occupies the region r<a. The charge density increases with radius as rho(r)=(rho,o)r^2 where rho,o is a constant. Calculate the electric field everywhere.

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    Solution Preview

    For r<a
    By Gauss Law,
    flux*eps = total charge
    =>E*4pi*eps*r^2 = integration(0 to r) [rho_o*r^2*4pi*r^2*dr]
    => ...

    Solution Summary

    Solution uses Gauss Law to solve for the electric field when r>a, r = a, and r<a.