61. The magnetic dipole moment is Gµµ=−060080.±.±ijej, where µ= NiA = Niπr2= 1(0.20 A)π(0.080 m)2= 4.02 ×10–4A·m2. Here iis the current in the loop, Nis the number of turns, Ais the area of the loop, and ris its radius. (a) The torque is GGGτµ=×=−×+=×−×−×+−B025030060030080025080018020024.±.±.±.±..±±.±.±.±.ikjijkjkiejejbgejHere ±± ±ik j,ji k,×=− ×=−and ±±±jk iare used. We also use ii=0×. Now, we substitute the value for to obtain ()444ˆˆˆ9.7 10 i7.2 10 j 8.0 10 k N m.τ−−−
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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.