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Q. An aeroplane in which the distance between the tips of wings is $50\, m$ is flying horizontally with a speed of $360\, km / h$ over a place where the vertical components of earth magnetic field is $2.0 \times 10^{-4}\, Wb / m ^{2}$. The potential difference between the tips of wings would be

Electromagnetic Induction

Solution:

$e=B_{v} v.l=2 \times 10^{-4} \times\left(\frac{360 \times 1000}{3600}\right) \times 50=1\, V$