A Flat Conductor of Thickness 0

A flat conductor of thickness 0.500 mm is placed in a magnetic field of 0.200 T perpendicular to the flat surface. If there are 8.00 × 10²⁴ charge carriers (i.e., electrons) per m³, what is the Hall voltage generated when 3.40 A flows along the conductor?

A) 0.266 mV
B) 0.531 mV
C) 0.797 mV
D) 1.06 mV
E) 2.12 mV