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Assume that there is a region with cylindrical symmetry in which the conductivity is given by s = 1.5e-150 kS/m. An electric field of 30az

Assume that there is a region with cylindrical symmetry in which the conductivity is given by s = 1.5e-150ρ kS/m. An electric field of 30az V/m is present.

(a) Find J.

(b) Find the total current crossing the surface ρ<ρ0, z = 0, all ϕ.

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