Q. The wing span of an aeroplane is $20\ metre$. It is flying in a field, where the vertical component of magnetic field of earth is $5 \times 10^{- 5}tesla$, with velocity $360\ km/h$. The potential difference produced between the blades will be
A) $0.10\ V$
B) $0.15\ V$
C) $0.20\ V$
D) $0.30\ V$
Explanation
(a) $e = Bvl = 5 \times 10^{- 5} \times \frac{360 \times 1000}{3600} \times 20 = 0.1V$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.