Two infinitely long wires each carrying current $I$ along the same direction are made into the geometry as shown in the figure below. The magnetic field at the point $P$ is

210443-q

  • [KVPY 2016]
  • A

    $\frac{\mu_0 I}{\pi r}$

  • B

    $\frac{\mu_0 I}{r}\left(\frac{1}{\pi}+\frac{1}{4}\right)$

  • C

    zero

  • D

    $\frac{\mu_0 I}{2 \pi r}$

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