# Earth's magnetic field and planes.

A Boeing 777 is flying due north at $$v=900km/h$$ (typical cruising speed) and at an altitude where the vertical component of the Earth's magnetic field is $$B=50\mu T$$. The wingspan of the 777 is about 60m. Determine the induced voltage in Volts across the tips of the wings.

Details and assumptions

• Although wings have a complicated shape as in the figure, for the purposes of this problem you may model the wings as a straight conducting rod of length $$L=60m$$ if you wish.
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