Question

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 $\frac{\pi}{4}$ to the plane of the paper
• B. perpendicular to the plane of the paper and directed into the paper
• C. along the bisector of the angle ACB towards AB
• D. along the bisector of the angle ACB away from AB.

Answer 1

Answer: (B)

normal to the plane of paper.