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The current of $1\,A$ is passed through a hexagonal conducting wire of side $1\,m$ . The magnetic induction at its centre $O$ in $Wb/m^2$ will be
  • A$\frac{{{\mu _0}}}{\pi }$
  • B$\frac{{\sqrt 3 {\mu _0}}}{\pi }$
  • C$\frac{{2\sqrt 3 {\mu _0}}}{\pi }$
  • D$\frac{{3\sqrt 3 {\mu _0}}}{\pi }$
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