This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: 4. A long circular cylinder, of radius R , carries a magnetization ~ M = kr 2 ˆ φ , where k is a constant, r is the radial distance from the axis, and ˆ φ is the “circumferential” unit vector. Find the bound current densities and magnetic ﬁeld due to ~ M for points inside and outside the cylinder. 5. A current I ﬂows down a long straight wire of radius R . If the wire is made of linear material with magnetic susceptibility χ 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 ﬂowing down the wire?...
View Full Document
- Fall '08
- Electromagnet, Magnetic Field, #, long circular cylinder, Electromagnetic Fields University of Virginia, bound current densities