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Question

A jet plane having a wing-span of 25 m is travelling horizontally towards east with a speed of 3600 km/hour. If the Earth's magnetic field at the location is 4×104T and the angle of dip is 30o, then, the potential difference between the ends of the wing is?

A
4 V
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B
5 V
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C
2 V
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D
2.5 V
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Solution

The correct option is C 5 V
e=Bv/v But BvBH=lan30o=13Bv=4×1043T
e=4×1043×25×(3600×518)=5.77V.

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