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BVP Medical BVP Medical Solved Paper-2010

  • question_answer
    An iron rod of \[0.2\text{ }c{{m}^{2}}\] cross-sectional area is subjected to a magnetizing field of \[1200\text{ }A\text{ }{{m}^{-1}}.\] The susceptibility of iron is 599.The magnetic flux produced is

    A)  0.904 Wb                           

    B)  \[\lambda \]

    C)  \[\frac{\lambda }{4(\mu -1)}\] 

    D) \[\frac{2\lambda }{4(\mu -1)}\]

    Correct Answer: B

    Solution :

                    \[\mu ={{\mu }_{0}}(1+\chi )\] or  \[\mu =4\pi \times {{10}^{-7}}(1+599)\] or            \[\mu =7.536\times {{10}^{-4}}Tm{{A}^{-1}}\]                 \[B=\mu H=7.536\times {{10}^{-4}}\times 1200T\]                 \[f=BA=7.536\times {{10}^{-4}}\times 1200\times 0.2\times {{10}^{-4}}Wb\]                 \[=1.81\times {{10}^{-5}}Wb\]


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