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VMMC VMMC Medical Solved Paper-2010

  • question_answer
    For the magnetic field to be maximum due to a small element of current carrying conductor at a point, the angle between the element and the line joining the element to the given point must be

    A) \[0{}^\circ \]      

    B)                        \[90{}^\circ \]   

    C)  \[180{}^\circ \]                

    D)         \[45{}^\circ \]

    Correct Answer: B

    Solution :

    The magnetic field due to small element of conductor of length is given by \[dB=\frac{{{\mu }_{0}}}{4\pi }\frac{idl\,\sin \theta }{{{r}^{2}}}\] This value will be maximum when \[\sin \theta =1=\sin {{90}^{o}}\]                 \[\theta ={{90}^{o}}\]


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