PhysicsNEET 2023Biot–Savart and Ampère's laws

Moving Charges and Magnetism

A very long conducting wire is bent into a semicircular shape from A to B as shown in the figure. The magnetic field at point P for the steady current configuration is given by:

Question 50 as printed in the NEET 2023 booklet

A. $\frac{μ _{0} i}{4 R}$ , pointed into the page
B. $\frac{μ _{0} i}{4 R}$ , pointed away from the page
C. $\frac{μ _{0} i}{4 R} (1 - \frac{2}{π})$ , pointed away from the page✓
D. $\frac{μ _{0} i}{4 R} (1 - \frac{2}{π})$ , pointed into the page

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

Moving Charges and Magnetism

More from this chapter in past papers