A coaxial conductor has radii a = 0.8 mm and b = 3 mm and a polystyrene dielectric for which ϵr = 2.56. If P = (2/ρ)aρ nC/m2 in the dielectric, find (a) D and E as functions of ρ; (b) Vab and χe. (c) If there are 4 × 1019molecules per cubic meter in the dielectric, find p(ρ).
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