1.

What is the mutual inductance of a two-loop system as shown with centre separation l

A.             \[\frac{{{\mu }_{0}}\pi {{a}^{4}}}{8{{l}^{3}}}\]
B.             \[\frac{{{\mu }_{0}}\pi {{a}^{4}}}{4{{l}^{3}}}\]
C.             \[\frac{{{\mu }_{0}}\pi {{a}^{4}}}{6{{l}^{3}}}\]
D.             \[\frac{{{\mu }_{0}}\pi {{a}^{4}}}{2{{l}^{3}}}\]
Answer» E.


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