# Electricity, Magnetism and Waves.

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A spherically symmetric volume charge distribution is given by

Rho® = k*r for r (less than or equal to) a

0 for r > a

Find:

a) what is the electric field both inside and outside the sphere

b) what is the potential at any point inside the sphere

c) How much energy was required to assemble the sphere

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##### Solution Summary

Electricity, magnetism, and waves are examined in an electric field. The potential energy is determined to assemble a sphere.

##### Solution Preview

Please see the attachment.

The charge density is given by:

(1.1)

So, in a Gauss surface which is a concentric sphere of radius r, the enclosed charge is:

(1.2)

Gauss law states that:

(1.3)

The ...

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