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Question
A 10 m wide spacecraft moves through the interstellar space at a speed 3 × 107 m s−1. A magnetic field B = 3 × 10−10 T exists in the space in a direction perpendicular to the plane of motion. Treating the spacecraft as a conductor, calculate the emf induced across its width.
Solution
Given:-
l = 10 m
v = 3 × 107 m/s
B = 3 × 10−10 T
Now,
Motional emf = Bvl
= (3 × 10−10 ) × (3 × 107 ) × (10)
= 9 × 10−2
= 0.09 V
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