The magnetic field at the centre O of the arc shown in the figure is
1
2I(\(\sqrt{2}\) + π) × \(\frac{10^{-7}}{r}\)
2
2I\(\frac{ \mu_0I }{4r} + \frac{ \mu_0 I\sqrt{2}}{2\pi r }\)
3
I(\(\sqrt{2}\) + π) × \(\frac{10^{-7}}{r}\)
4
I\(\left(\sqrt{2}+\frac{π}{4}\right) × \frac{10^{-7}}{r}\)