MIT6_641s09_sol_quiz2008

# MIT6_641s09_sol_quiz2008 - MIT OpenCourseWare...

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Unformatted text preview: MIT OpenCourseWare http://ocw.mit.edu 6.641 Electromagnetic Fields, Forces, and Motion Spring 2009 For information about citing these materials or our Terms of Use, visit: http://ocw.mit.edu/terms . 6.641 — Electromagnetic Fields, Forces, and Motion Spring 2008 Quiz 1- Solutions Prof. Markus Zahn MIT OpenCourseWare Problem 1 A Question: Find a suitable image current to find the magnetic field for z > . Does the direction of the image current surprise you? Solution: z I I (image current) Figure 1: Figure showing image line. (Image by MIT OpenCourseWare). B Question: What is the magnetic field magnitude and direction for z > ? Solution: I H φ = for z > 0 2 πr 1 C Spring 2008 Quiz 1 6.641, Spring 2008 Question: What is the surface current magnitude and direction on the z = 0 surface of the conducting plane? Solution: n × H ( z = 0 + ) = i z × H φ ( z = 0 + ) i φ = − H φ i r = K I K r = − H φ ( z = 0 + ) = − 2 πr Problem 2 A Question: What is the electric field for a ≤ r ≤ b ?...
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## This note was uploaded on 12/02/2010 for the course ECE 6.641 taught by Professor Zahn during the Spring '09 term at MIT.

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MIT6_641s09_sol_quiz2008 - MIT OpenCourseWare...

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