A current $I$ enters a circular coil of radius $R$, branches into two parts and then recombines as shown in the circuit diagram. The resultant magnetic field at the centre of the coil is

826-363

  • A

    Zero

  • B

    $\frac{{{\mu _0}I}}{{2R}}$

  • C

    $\frac{3}{4}\left( {\frac{{{\mu _0}I}}{{2R}}} \right)$

  • D

    $\frac{1}{4}\left( {\frac{{{\mu _0}I}}{{2R}}} \right)$

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