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MGIMS WARDHA MGIMS WARDHA Solved Paper-2007

  • question_answer
    Two coils of self-inductances \[{{L}_{1}}\] and \[{{L}_{2}}\] are placed so close together that effective flux in   one coil is completely linked with the other. If M is the mutual inductance between them, then

    A) \[M={{L}_{1}}{{L}_{2}}\]                               

    B) \[M={{L}_{1}}/{{L}_{2}}\]

    C) \[M=L\]                               

    D) \[M=\sqrt{{{L}_{1}}{{L}_{2}}}\]

    Correct Answer: D

    Solution :

    When there is no leakage of magnetic flux,\[M=\sqrt{{{L}_{1}}{{L}_{2}}}\]


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