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Unformatted text preview: Physics 498/MMA Handout 9 Oct 10th 2002 Mathematical Methods in Physics I http://w3.physics.uiuc.edu/ mstone5 Homework 9 Prof. M. Stone 2117 ESB University of Illinois 1) Conducting Strip : A thin insulated conducting strip of width 2 a extends infinitely far in the z direction. It lies in the plane y = 0 between x = a and x = + a and is held at potential V , The rest of the y = 0 plane consists of two semiinfinite conducting sheets, one occupying all x > a , and one all x < a . Both these sheets are grounded i.e. held at potential V = 0. a) Represent the potential V ( x ) in the y = 0 plane as a Fourier integral V ( x ) = Z  dk 2 A ( k ) e ikx , and explicitly compute A ( k ). b) There is no charge or conductors elsewhere, so the electrostatic potential in the rest of three dimensional space satisfies Laplaces equation with the boundary condition V 0 as  y  . Write down the Fourier integral giving the function V ( x, y, z ) at all points in space. c) Compute the electric field E = V near y = 0 on either side of the conducting planes, and hence find the Fourier integral which gives the charge distribution ( x ) on the three conducting sheets....
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This homework help was uploaded on 01/29/2008 for the course PHYS 598 taught by Professor Stone during the Fall '07 term at University of Illinois at Urbana–Champaign.
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