A solid conductor of circular cross section is made of a homogeneous nonmagnetic material. if the radius a = 1 mm, the conductor axis lies on the z axis, and the total current in the az axis is 20 A
(a) find Hφ at ρ = 0.5mm
(b) Bφ at ρ = 0.8 mm
(c) the total magnetic flux per unit length inside the conductor
(d) the total flux for ρ < 0.5 mm
(e) the total magnetic flux outside the conductor.