Question: A long current carrying wire is centered within a current sheath of radius r = a. The wire carries current density Iwire and the sheath

A long current carrying wire is centered within a current sheath of radius r = a. The wire carries current density Iwire and the sheath carries uniformly distributed current density Jsheath down their length. Neglect the cross-sectional thickness of the sheath and wire. a.) What is the magnetic flux density B in all regions? b.) Show what sheath current, Isheath is needed to zero the flux density B for r > a

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