Q. In the above question, the magnetic induction at $O$ due to the whole length of the conductor is
A) $\frac{\mu_{0}i}{r}$
B) $\frac{\mu_{0}i}{2r}$
C) $\frac{\mu_{0}i}{4r}$
D) Zero
Explanation
(c) The induction due to $AB$ and $CD$ will be zero. Hence the whole induction will be due to the semicircular part $BC.B = \frac{\mu_{o}i}{4r}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.