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In the above figure magnetic field at point $C$ will be
  • A$\frac{{{\mu _0}i}}{{2\pi r}}\left[ {\left( {1 + \pi } \right)\hat k + \hat i} \right]$
  • B$\frac{{{\mu _0}i}}{{4\pi r}}\left[ {\left( {1 + \pi } \right)\hat k - \hat i} \right]$
  • C$\frac{{{\mu _0}i}}{{2\pi r}}\left[ {\left( {1 + \pi } \right)\hat k - \hat i} \right]$
  • D$\frac{{{\mu _0}i}}{{4\pi r}}\left[ {\left( {1 - \pi } \right)\hat k + \hat i} \right]$
Medium
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