Solved: In Fig. 28-50a, two concentric coils, lying in the
Chapter , Problem 62(choose chapter or problem)
In Fig. 28-50a, two concentric coils, lying in the same plane, carry currents in opposite directions. The current in the larger coil 1 is fixed. Current i2 in coil 2 can be varied. Figure 28-50b gives the net magnetic moment of the two-coil system as a function of iz. The vertical axis scale is set by fLnet,s = 2.0 X 10-5 A m2 , and the hOlizontal axis scale is set by iz, = 10.0 rnA. If the current in coil 2 is then reversed, what is the magnitUde of the net magnetic moment of the two-coil system when i2 = 7.0 rnA?
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