Which of the following gives the value of magnetic field according to, Biot-Savart’s law’

  • A

    $\frac{{i\Delta l\sin \theta }}{{{r^2}}}$

  • B

    $\frac{{{\mu _0}}}{{4\pi }}\frac{{i\Delta l\sin \theta }}{r}$

  • C

    $\frac{{{\mu _0}}}{{4\pi }}\frac{{i\Delta l\sin \theta }}{{{r^2}}}$

  • D

    $\frac{{{\mu _0}}}{{4\pi }}i\Delta l\sin \theta $

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