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Compute the magnetic dipole moment of th...

Compute the magnetic dipole moment of the loop shown in Fig. 1.69

Text Solution

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The given loop may be considered as the superposition of
the two loops, as shown in the figure.
The resultant dipole moment is `M=(piR_1^2 I)/2-(piR_2^2I)/2`
or `M=(piI)/2(R_1^2-R_2^2)` (inward)
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