Q. The maximum current that flows through a fuse wire before it blows out varies with its radius as
A) $r^{3/2}$
B) $r$
C) $r^{2/3}$
D) $r^{1/2}$
Explanation
(a) It is called safe current and is proportional to $r^{3/2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.