851_Physics ProblemsTechnical Physics

851_Physics ProblemsTechnical Physics - Chapter 30 *P30.11...

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Chapter 30 191 *P30.11 (a) Above the pair of wires, the field out of the page of the 50 A current will be stronger than the ± k ej field of the 30 A current, so they cannot add to zero. Between the wires, both produce fields into the page. They can only add to zero below the wires, at coordinate yy =− . Here the total field is B = µ π 0 2 I r + 0 2 I r : 0 2 50 028 30 50 30 0 28 50 30 0 28 20 30 0 28 0 420 0 = + −+ L N M M O Q P P =+ −= = A m A m m ma t m y y . ±± . . .. di e j bg b g af kk FIG. P30.11 (b) At y = 01 . m the total field is B = 0 2 I r + 0 2 I r : Bk k k = ×⋅ F H G I K J 41 0 2 50 30 010 116 10 7 4 TmA A 0.10 m A m T . ± . ± . ± . The force on the particle is FvB i k j =×= × × × × ⋅ ⋅ −=
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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