An experiment is performed to demonstrate the Hall effect. A thin rectangular strip of conducting material with width 15cm and length 31cm is attached to a battery and immersed in a 2.60 T field perpendicular to the strip. What is the Hall voltage across the strip? 
a) 2.60 V 
b) 0.38 V 
c) 0.15 V 
d) 0.07 V