7. Consider a long straight wire with diameter of 2 mm carrying a current of 1 amp. Assume that the current density is uniform. What is the magnetic field at the center of the wire? What is the magnetic field at a radius r = 0.5 mm from the center? At r = 1.0 mm from the center? Take the permeability H= Ho everywhere. 2 I=| Amp R= Imm
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