BCECE Medical BCECE Medical Solved Papers-2014

  • question_answer
    A horizontal overhead power line carries a current of 90A in east to west direction. Magnitude of magnetic field due to the current 1.5 m below the line is

    A)  \[1.2\,T\]            

    B)  \[1.2\,\times {{10}^{-10}}T\]

    C)  \[0T\]              

    D)  \[1.2\times {{10}^{-5}}T\]

    Correct Answer: D

    Solution :

    Magnitude of magnetic field due to current \[B=\frac{{{\mu }_{0}}}{2\pi }\frac{i}{r}\] \[B={{10}^{-7}}\times \frac{2\times 90}{1.5}=1.2\times {{10}^{-5}}T\]


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