The mutual inductance between the rectangular loop and the long straight wire as shown in figure is $M$.

143-187

  • A

    $M =$ Zero

  • B

    $M = \frac{{{\mu _0}a}}{{2\pi }}\ln \left( {1 + \frac{c}{b}} \right)$

  • C

    $M =\frac{{{\mu _0}b}}{{2\pi }}\ln \left( {\frac{{a + c}}{b}} \right)$

  • D

    $M =\frac{{{\mu _0}a}}{{2\pi }}\ln \left( {1 + \frac{b}{c}} \right)$

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