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Unformatted text preview: 4. Serway & Jewett Problem 30 : 31 . An innitely long, cylindrical conductor of radius R carries a current I as shown in Figure P 30 : 31 . The current-density magnitude J , however, is not uniform over any cross-section of the conductor, but rather is a function J = Cr , where C is a positive constant and r is the perpendicular distance from the cylinders axis. (a) Find an expression for the magnetic-eld magnitude at any distance r < R . (b) Find an expression for the magnetic-eld magnitude at any distance r > R . 5. A thin, conducting, innite plate, carrying a uniform charge density , initially lies at rest in the xy plane. The plate is set into motion with a constant speed v in the + x direction. Find the magnetic eld outside the plate. Suggestion: Symmetry dictates that the magnetic eld magnitude be constant. 1...
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This note was uploaded on 05/01/2011 for the course HPHY 253 taught by Professor Bak during the Spring '09 term at Morehouse.
- Spring '09