A very long conducting wire is bent in a semicircular shape from $A$ to $B$ as shown in figure. The magnetic field at point $P$ for steady current configuration is given by:
NEET 2023, Medium
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$B =\frac{\mu_0}{4 \pi} \frac{I}{R}(\pi)-\frac{\mu_0}{4 \pi} \frac{2 I }{ R }$
$=\frac{\mu_0 I }{4 R }\left[1-\frac{2}{\pi}\right] \text { outward i.e away from page. }$
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