P30_005 - 5. We assume the current ows in the +x direction...

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5. We assume the current flows in the + x direction and the particle is at some distance d in the + y direction (away from the wire). Then, the magnetic Feld at the location of the charge q is ~ B = µ 0 i 2 πd ˆ k . Thus, ~ F = q~v × ~ B = µ 0 iq 2 πd ³ ~v × ˆ k ´ . (a) In this situation, ~v = v ( ˆ j) (where v is the speed and is a positive value). Also, the problem speciFes q> 0. Thus, ~ F = µ 0 iqv 2 πd ³ ( ˆ j) × ˆ k ´ = µ 0 iqv 2 πd ( ˆ i) , which tells us that ~ F q
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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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