What is the current flowing through the aluminum rod on tilted conducting rails?

[MrDMD83]

partscoretotalsubmissions1014/50The two conducting rails in the drawing are tilted upwards so they make an angle of 30.0° with respect to the ground. The vertical magnetic field has a magnitude of 0.053 T. The 0.20 kg aluminum rod (length = 1.6 m) slides without friction down the rails at a constant velocity. How much current flows through the bar?

 

[HallsofIvy]

?? If there are "points" involve then this is either homework or a test. Also it is clearly physics, not mathematics. And you have not shown that you have done anything yourself. You did just about everything wrong!
I'm moving this to physics homework.