BHU PMT BHU PMT (Screening) Solved Paper-2008

  • question_answer
    If the total magnetic field due to earth is 28 A/m, then the total magnetic induction due to earth is

    A)  28 T                                      

    B)  280 ab-amp/cm

    C)  0.352 gauss       

    D)  0.352 T

    Correct Answer: C

    Solution :

                     Magnetic induction B is given by \[B={{\mu }_{0}}H\] \[=4\pi \times {{10}^{-7}}\times 28\]                 \[=352\times {{10}^{-7}}T\]             (\[\because \]\[1T={{10}^{4}}\]gauss) \[=0.352\text{ }gauss\]


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