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For a spherically symmetric volume of charge in a vacuum with a charge density that is
given by:
Pv = Qe™ for 0 < r < a and py = 0 for r>a
%3D
Find the Displacement Current Density vector for r < a if the charge distribution is in a
material with a dielectric constant that is er.
(Q/r2)[In(b) - In(a)] ar
-(Qea/r2)[1/a + 1/a²] ap
-[QaaIn(a)][a? + 2a +2] ar
O ar
-(Qe" )(1 + 2/r +
2/r2) a
r
(-Qeª/r²) ar

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