Shown in the figure is a conductor carrying a current $I$. The magnetic field intensity at the point $O$ (common centre of all the three arcs) is

827-198

  • A

    $\frac{{5{\mu _0}I\theta }}{{24\pi r}}$

  • B

    $\frac{{{\mu _0}I\theta }}{{24\pi r}}$

  • C

    $\frac{{1{\mu _0}I\theta }}{{24\pi r}}$

  • D

    zero

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