Physics-
General
Easy
Question
An aircraft with a wing-span of 40 m flies with a speed of 1080 km h–1 in the eastward direction at a constant altitude in the northern hemisphere, where the vertical component of earth's magnetic field is 1.75 
10–5 T. Then the emf that develops between the tips of the wings is
- 0.5 V
- 0.35 V
- 0.21 V
- 2.1 V
The correct answer is: 0.21 V
L=40 m, v =1080km h–1 =300m sec–1 and B =1.75 ´ 10–5 T Þ 
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