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Unformatted text preview: School of Electrical and Computer Engineering, Cornell University 1 ECE 303: Electromagnetic Fields and Waves Fall 2005 Exam 1 September 27, 2005 INSTRUCTIONS: Only work done on the blue exam booklets will be graded do not attach your own sheets to the exam booklets under any circumstances Every problem must be done in a separate blue booklet so you must have 3 separate blue booklets before starting the exam 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 line-current in the form of a loop and carrying a current I , as shown in the figure below. The loop resides entirely in the x-y plane. The current loop has four different segments labeled A , B , C , and D . You need to find the magnetic field at the point P (origin). Note that segments A and C are arcs with center at the origin. The total magnetic field center at the origin....
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