As shown in the figure, two frictionless conducting rails (#1 and #2) are attached to a 20.0° incline such that the inside edges are 80.0 cm apart. A copper bar with a mass of 0.237 kg slides (without friction) at a constant speed down the conducting rails. Sliding bar Conducting rails If there is a vertical magnetic field of 0.0516 T in magnitude in the region of the incline, determine the magnitude of the current I that flows through the sliding copper bar. I = What is the direction of the current in the sliding bar? O from rail #2 to rail #1 O from rail #1 to rail #2