Consider the apparatus shown below in which a conducting bar can be moved along two rails connected to a lightbulb. x x x x X x x X x X Bin x x x X x x x x x x x x x x X x x * X X x x X What is the speed of the bar? (m/s) x x x x x x x Find the current delivered to the lightbulb. What is the power delivery to the lightbulb? x x x x x X = The whole system is immersed in a magnetic field of magnitude B= T perpendicular and into the page. The distance between the horizontal rails is l = 0.800 m. The resistance of the lightbulb is R = 30 , assumed to be constant. The bar and rails have negligible resistance. The bar is moved toward the right by a constant force of F= 0.2 N. * x