A current I enters a circular coil of radius R, branches into two parts at A and then recombines at B (as shown in figure). The resultant magnetic field at the centre of the coil is-
1
\(\frac{2}{3}\left( {\frac{{{\mu _0}I}}{{2R}}} \right)\)
2
\(\frac{1}{3}\left( {\frac{{{\mu _0}I}}{{2R}}} \right)\)
3
\({\frac{{{\mu _0}I}}{{2R}}}\)
4
Zero