A L=3 mile long conducting cable tethers a satellite to the International Space Station. The Cable moves through the Earth' magnetic field of about B=0.02 Gauss at a speed of v=8 km/sec. The cable points radially from the Space Station to the satellite. The ISS moves Eastwards and the magnetic field is Northward.

Question

What is the potential difference between the two ends of the tether ?

Answer 1

1T=10000 Gauss
B=0.02•10⁻⁴= 2•10⁻⁶ T
v=8 km/s=8•10³ m/s
U=BLv= 2•10⁻⁶•4828• 8•10³=77.25 V

Answer 2

thnx :)