Question

A jet plane is travelling towards west at a speed of 1800 km/h.What is the voltage difference developed between the ends of the wing having a span of 25 m, if the Earth's magnetic filed at the location has a magnitude of $5\times {10}^{-4}T$ and the dip angle is ${30}^0$?

Answer 1

$v=1800k/h$

$=1800\times \frac{5}{18}$

$=500m/s$

$l=$distance between the ends of the wings $=25m$

$b=5\times {10}^{-4}T$

$\theta ={30}^0$

motional emf$\left(e\right)=B_{v}vl(B_v=verticalcomponetoftheearthmagneticfield)$

$e=5\times {10}^{-4}sin{30}^0\times 500\times 25$

$e=3.1V$

hence the voltage difference developed between the ends is $3.1V$