BCECE Engineering BCECE Engineering Solved Paper-2001

  • question_answer
    Relative permeability of iron is 5500. Its magnetic susceptibility is:

    A)  5501                                     

    B)  \[5500\times {{10}^{-7}}\]               

    C)             \[5500\times {{10}^{7}}\]           

    D)         5499

    Correct Answer: D

    Solution :

    Relative permeability \[({{\mu }_{r}})\] is related to magnetic susceptibility \[({{\chi }_{m}})\] through relation \[{{\mu }_{r}}=1+{{\chi }_{m}}\] or            \[{{\chi }_{m}}={{\mu }_{r}}-1\] \[\therefore \]  \[{{\chi }_{m}}=5500-1=5499\]\[(\because \,{{\mu }_{r}}=5500)\]


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