Q. Given below are two statements : Statement I : Biot-Savart's law gives us the expression for the magnetic field strength of an infinitesimal current element ($Id\vec{l}$) of the current carrying conductor only. Statement II : Biot-Savart's law is analogous to Coulomb's inverse square law of charge q, with the former being related to the field produced by a scalar source, $Id\vec{l}$, while the latter being produced by a vector source, q. In light of above statements choose the most appropriate answer from the options given below
A) Statement I is incorrect and statement II is correct
B) Both Statement I and Statement II are correct
C) Both statement I and statement II are incorrect
D) Statement I is correct and Statement II is incorrect.
Explanation
[Solution] Statement I is correct. In Statement II the sources are swapped: $Id\vec{l}$ is a vector source and q is a scalar source, so II is incorrect. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.