A conducting wire carrying current is arranged as shown. The magnetic field at ‘O’
1
\(\frac{{{\mu _0}i}}{{12}}\left[ {\frac{1}{{{R_1}}} - \frac{1}{{{R_2}}}} \right]\)
2
\(\frac{{{\mu _0}i}}{{12}}\left[ {\frac{1}{{{R_1}}} + \frac{1}{{{R_2}}}} \right]\)
3
\(\frac{{{\mu _0}i}}{6}\left[ {\frac{1}{{{R_1}}} - \frac{1}{{{R_2}}}} \right]\)
4
\(\frac{{{\mu _0}i}}{6}\left[ {\frac{1}{{{R_1}}} + \frac{1}{{{R_2}}}} \right]\)
5
Question Not Attempted