Quiz10_solutions - I . 3 lines as promised: Problem 1 B = 4...

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ENEE 380 Fall 2011 November 11, 2011 Discussion Quiz 10 1. Calculate the magnetic field a distance z above the center of a circular loop of radius R which carries a steady current I . 2. Using Ampere’s law, calculate the magnetic field a distance r from an infinitely long straight wire carrying a constant current
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Unformatted text preview: I . 3 lines as promised: Problem 1 B = 4 Z dl I b r r 2 = b z 4 Z 2 dRI R 2 + z 2 R R 2 + z 2 = b z IR 2 2( R 2 + z 2 ) 3 / 2 Problem 2 B = B ( r ) b B ( r ) 2 r = I enc = I B ( r ) = I 2 r 1...
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Quiz10_solutions - I . 3 lines as promised: Problem 1 B = 4...

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