Question: A current filament on the z axis carries a current of 7 mA in the a z direction, and current sheets of 0.5 a z

A current filament on the z axis carries a current of 7 mA in the a_z direction, and current sheets of 0.5 a_z A/m and −0.2 a_z A/m are located at ρ = 1 cm and ρ = 0.5 cm, respectively. Calculate H at:

(a) ρ = 0.5 cm;

(b) ρ = 1.5 cm;

(d) What current sheet should be located at ρ = 4 cm so that H = 0 for all ρ > 4 cm?

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