Question

An horizontally flying airplane has a 20 m wing span. If the vertical component of the Earth's magnetic field is 2*10^-5 T, and the voltage measured from wing tip to wing tip is 4 mV, What is the ground speed of the plane?

(A) 5 m/s
(B) 20 m/s
(C) 7 m/s
(D) 10 m/s

Answer 1

D =10m/s