In a region of space where the magnetic field of the earth has a magnitude of 80 mT and is directed 30° below the horizontal, a 50-cm length of wire oriented horizontally along an east-west direction is moved horizontally to the south with a speed of 20 m/s. What is the magnitude of the induced potential difference between the ends of this wire?
a.
0.40 mV
b.
0.35 mV
c.
0.69 mV
d.
0.45 mV
e.
0.30 mV