The magnetic field due to a current carrying square loop of side a at a point located symmetrically at a distance of $a/2$ from its centre (as shown is)

131-144

  • A

    $\frac{{\sqrt 2 \,{\mu _0}i}}{{\sqrt 3 \,\pi \,a}}$

  • B

    $\frac{{{\mu _0}\,i}}{{\sqrt 6 \,\pi \,a}}$

  • C

    $\frac{{2\,{\mu _0}i}}{{\sqrt 3 \,\pi \,a}}$

  • D

    zero

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