64. Looking at the point in the graph (Fig. 28-54(b)) corresponding to i2= 0 (which means that coil 2 has no magnetic moment) we are led to conclude that the magnetic moment of coil 1 must be 5212.0 10A m .µ−=×⋅Looking at the point where the line crosses the axis (at i2= 5.0 mA) we conclude (since the magnetic moments cancel there) that the magnitude of coil 2’s moment must also be 22.0 10A m−=×⋅when 20.0050 Ai=which means (Eq. 28-35)
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