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Unformatted text preview: School of Electrical and Computer Engineering, Cornell University 1 ECE 303: Electromagnetic Fields and Waves Fall 2006 Exam 1 September 26, 2006 INSTRUCTIONS: Every problem must be done in a separate blue booklet so you must have 3 separate blue booklets before starting the exam Only work done on the blue exam booklets will be graded do not attach your own sheets to the exam booklets under any circumstances To get partial credit you must show all the relevant work Correct answers with wrong reasoning will not get points All questions do not carry equal points All questions do not have the same level of difficulty DO NOT WRITE IN THIS SPACE School of Electrical and Computer Engineering, Cornell University 2 Problem 1 (30 points) Consider a coil of radius a with N turns per unit length and carrying a time varying current I ( t ) , as shown below. The length of the coil is L . The coil is oriented such that its axis is the z-axis, and the center of the coil is at the origin (0,0,0). The number of turns per unit length in the coil (i.e. N ) is fairly large so that in any small interval of length dz along the length of the coil (as shown in the figure below) the number of turns is equal to N dz ....
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This note was uploaded on 02/02/2008 for the course ECE 3030 taught by Professor Rana during the Fall '06 term at Cornell University (Engineering School).
- Fall '06