A Metal Blade (Length = 80 Cm)spins at a Constant $\degree$

Multiple Choice

A metal blade (length = 80 cm) spins at a constant rate of 10 radians/s about a pivot at one end.A uniform magnetic field of 2.0 mT is directed at an angle of 30 $\degree$ with the plane of the rotation.What is the magnitude of the potential difference between the two ends of the blade?

A) 5.5 mV
B) 6.4 mV
C) 3.2 mV
D) 11 mV
E) 13 mV