Q. The magnetic induction in the region between the pole faces of an electromagnet is $0.7$ $weber/m^{2}$. The induced e.m.f. in a straight conductor $10\ cm$ long, perpendicular to $B$ and moving perpendicular both to magnetic induction and its own length with a velocity $2\ m/sec$ is
A) $0.08\ V$
B) $0.14\ V$
C) $0.35\ V$
D) $0.07\ V$
Explanation
(b) $e = Bvl \Rightarrow e = 0.7 \times 2 \times \left( 10 \times 10^{- 2} \right) = 0.14\ V$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.