A current sheet, K = 20 a z A/m, is located at = 2, and a second sheet, K = 10a z A/m, is

A current sheet, K = 20 a_z A/m, is located at ρ = 2, and a second sheet, K = −10a_z A/m, is located at ρ = 4.

(a) Let V_m = 0 at P(ρ = 3, ϕ = 0, z = 5) and place a barrier at ϕ = π. Find V_m(ρ, ϕ, z) for −π < ϕ <π.

(b) Let A = 0 at P and find A(ρ, ϕ, z) for 2 < ρ < 4.