Q. A current of $2\ amp$, flows in a long, straight wire of radius $2\ mm$. The intensity of magnetic field on the axis of the wire is
A) $\left( \frac{\mu_{0}}{\pi} \right) \times 10^{3}tesla$
B) $\left( \frac{\mu_{0}}{2\pi} \right) \times 10^{3}tesla$
C) $\left( \frac{{2\mu}_{0}}{\pi} \right) \times 10^{3}tesla$
D) Zero
Explanation
(d) Magnetic field on the axis of conductor is zero
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.