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NEET Sample Paper NEET Sample Test Paper-36

  • question_answer
    A wire in the form of a circular loop of one turn carrying a current produces a magnetic field .5 at the centre. If the same wire is looped into a coil of two turns and carries the same current, the new value of magnetic induction at the centre is

    A)  5B          

    B)  3B

    C)  2B          

    D)  4B

    Correct Answer: D

    Solution :

     \[B''={{n}^{2}}B={{(2)}^{2}}B=4B\]


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