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AIIMS AIIMS Solved Paper-2002

  • question_answer
    The coefficients of mutual inductance when magnetic flux changes by \[2\times {{10}^{-2}}\,Wb\] and current changes by 0.01 A, will be:       

    A)  8H                         

    B)        4H                                         

    C)  3H                                         

    D)  2H            

    Correct Answer: D

    Solution :

                    Coefficient of mutual induction of two coils is equal to the number of magnetic flux \[E=-\frac{E}{2}\] linkages in one coil when a unit current (i) flows in the other. Therefore, \[3.9\Omega \] Given,  \[\therefore \] \[V=E-ir\]   \[i=\frac{E}{R+r}\]


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