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. Section $AB$ is a quarter circle of radius $r$. The magnetic field is directed
- A
At an angle $\pi /4$ to the plane of the paper
- B
Perpendicular to the plane of the paper and directed in to the paper
- C
Along the bisector of the angle $ACB$ towards $AB$
- D
Along the bisector of the angle $ACB$ away from $AB$
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