MCQ
Find magnetic field at point $P$ in given diagram.
- A$\frac{{{\mu _0}i}}{{4\pi a}}\left( {\sqrt 3 - 1} \right) \odot $
- B$\frac{{{\mu _0}i}}{{8\pi a}}\left( 1 - {\sqrt 3 } \right) \odot $
- ✓$\frac{{{\mu _0}i}}{{8\pi a}}\left( {\sqrt 3 - 1} \right) \odot $
- D$\frac{{{\mu _0}i}}{{4\pi a}}\left( 1 - {\sqrt 3 } \right) \odot $
