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Unformatted text preview: a b , assuming that V ( = b ) = 0, in terms of s . (c) (2 points) Find an expression for the capacitance per unit length. 5 3. (10 points) A semicircular ring of charge in the z = 0 plane, as shown, has uniform charge density C/m. Assume that the charge ring exists in free space. Find an expression for the electric eld at the origin (0 , , 0). 6 4. (10 points) Two infnitely long concentric conducting cylinders are shown. The inner cylinder is at potential V and the outer at V = 0. The material in the region a b has conductivity and permittivity . (a) (5 points) Solve Laplaces equation For the potential as a Function oF position in the region a b . 7 (b) (5 points) Find an expression for the resistance per unit length of the coaxial system, making use of Ohms law. 8...
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This note was uploaded on 02/04/2012 for the course ECE 311 taught by Professor Peroulis during the Fall '08 term at Purdue UniversityWest Lafayette.
 Fall '08
 peroulis

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