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Unformatted text preview: electric eld lines and equipotentials for the wire. Now assume that we place two thin wires of the same length, , endtoend but not quite touching. This is called a dipole antenna. The ends of the wires closest to each other are called the antenna feed and they are the terminals where we would place a transmitter or receiver. (b) Assuming that the presence of the two wires do not inuence each other (so that the eld distributions for each are the same you found for a single wire above), determine the voltage between the terminals of the dipole antenna in terms of the eld ~ E and the antenna length 2 . 3. A sphere of radius R carries a polarization, ~ P = k r r where k is a constant and r is the distance from the center of the sphere. (a) Find the bound charges, b and b . (b) Find the eld inside and outside the sphere. 4. Cheng, P.322 . 5. Cheng, P.326 . 6. Cheng, P.328 ....
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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
 WEIKLE
 Electromagnet

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