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Unformatted text preview: 4. A long circular cylinder, of radius R , carries a magnetization ~ M = kr 2 , where k is a constant, r is the radial distance from the axis, and is the circumferential unit vector. Find the bound current densities and magnetic eld due to ~ M for points inside and outside the cylinder. 5. A current I ows down a long straight wire of radius R . If the wire is made of linear material with magnetic susceptibility m , and the current is distributed uniformly, (a) what is ~ B a distance r from the center? (b) Find all the bound currents on or in the wire. What is the net bound current owing down the wire?...
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This note was uploaded on 10/16/2010 for the course ECE 309 taught by Professor Weikle during the Fall '08 term at UVA.
- Fall '08