P29_004 - 4(a The force on the electron is FB = = = = i j i...

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4. (a) The force on the electron is ~ F B = q~v × ~ B = q ( v x ˆ i+ v y ˆ j) × ( B x ˆ B y ~ j ) = q ( v x B y v y B x ) ˆ k =( 1 . 6 × 10 19 C)[(2 . 0 × 10 6 m / s)( 0 . 15 T) (3 . 0 × 10 6 m / s)(0 . 030 T)] 6 . 2 × 10 14 N) ˆ k . Thus, the magnitude of ~ F B is 6 . 2 × 10 14 N, and ~ F B points in the positive z direction. (b) This amounts to repeating the above computation with a change in the sign in the charge. Thus,
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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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