P30_018 - a ) produce magnetism into the page at P and the...

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18. Recalling the straight sections discussion in Sample Problem 30-1, we see that the current in the straight segments colinear with P do not contribute to the feld at that point. We use the result oF problem 16 to evaluate the contributions to the feld at P , noting that the nearest wire-segments (each oF length
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Unformatted text preview: a ) produce magnetism into the page at P and the Further wire-segments (each oF length 2 a ) produce magnetism pointing out oF the page at P . Thus, we fnd (into the page) B P = 2 2 i 8 a ! 2 2 i 8 (2 a ) ! = 2 i 8 a ....
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This note was uploaded on 11/12/2011 for the course PHYS 2001 taught by Professor Sprunger during the Fall '08 term at LSU.

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