68. We note that the distance from each wire to Pis rd==20 071.m. In both parts, the current is i= 100 A. (a) With the currents parallel, application of the right-hand rule (to determine each of their contributions to the field at P) reveals that the vertical components cancel and the horizontal components add, yielding the result: 402cos45.04.00 10 T2iBrµ−⎛⎞=°=×⎜⎟⎝⎠πand directed in the –xdirection. In unit-vector notation, we have
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.