Figure 29-81 shows a wire segment of length s 3.0 cm,
Chapter , Problem 75(choose chapter or problem)
Figure 29-81 shows a wire segment of length s 3.0 cm, centered at the origin, carrying current i ! 2.0 A in the positive y direction (as part of some complete circuit). To calculate the magnitude of the magnetic field produced by the segment at a point several meters from the origin, we can use B ! (m0/4p)i 's (sin u)/r2 as the BiotSavart law. This is because r and u are essentially constant over the segment. Calculate (in unit-vector notation) at the (x, y, z) coordinates (a) (0, 0, 5.0 m), (b) (0, 6.0 m, 0), (c) (7.0 m, 7.0 m, 0), and (d) (%3.0 m,%4.0 m,0).
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