A wire carrying current `I` is shaped as shown. Section `AB` is a quarter circle of radius `r`. The magnetic field is directed

A wire carrying current I is shaped as shown in the figure. The section AB is quarter circle of radius r. The magnetic field is directed .

In figure shown U-shaped wire a current i is flowing as shown. Section PQR is a semicircle of radius a.If O is origin then find magnetic field at O

A part of a long wire carrying a current i is bent into a circle of radius r as shown in figure. The net magnetic field at the centre O of the circular loop is

A part of a long wire carrying a current i is bent into a circle of radius r as shown in figure. The net magnetic field at the centre O of the circular loop is :

A part of a long wire carrying a current i is bent into a circle of radius r as shown in figure. The net magnetic field at the centre O of the circular loop is

A long wire carrying current 'I' is bent into the shape as shown in the figure. The net magnetic field intensity at the centre 'O' is

A long wire carrying current 'I' is bent into the shape as shown in the figure. The net magnetic field intensity at the centre 'O' is

A current carrying conductor is bent into a quarter of a cirle of radius R as shown . The magnetic field at the center O is