III.One Turn Loop K=I/D- B=LoI/D. Figure 6-35 The magnetic force on a current-carrying loop tends to expand the loop. Courtesy of Krieger Publishing.Used with permission. H=6,=Hx1,L)=%= D HoxlI D A.Energy Method 专rA-r时 dx 2 D B.Lorentz Force Law f=∫JxB dV 5+8 →H2 I/D 6.641,Electromagnetic Fields,Forces,and Motion Lecture 13 Prof.Markus Zahn Page 5 of 146.641, Electromagnetic Fields, Forces, and Motion Lecture 13 Prof. Markus Zahn Page 5 of 14 III. One Turn Loop Courtesy of Krieger Publishing. Used with permission. ( ) µ Φ µ Φ 0 z 0z I x l H = , = H xl , L x = = D D I µ0 x l = I D A. Energy Method ( ) 2 2 0 x 1 1 dL x l f= I = I 2 dx 2 D µ B. Lorentz Force Law V f = J B dV × ∫