(a) The figure below shows two parallel conducting rails 17.2 cm apart, connected by a resistor with resistance R3 = 5.00 0. Two metal rods with resistances R, = 12.0 0 and R2 = 15.0 0 slide along the rails with negligible friction. Rod R, slides to the left at constant speed v, = 4.00 m/s, while rod R2 slides at speed v2 = 2.00 m/s. The rods and rails are in the presence of a uniform magnetic field pointing into the page, perpendicular to the plane of the rails, with a magnitude of Bin = 0.0100 T. X X X R R2 What are the magnitude (in JA) and direction of the current through resistor R3? magnitude 1.97e-4 X You may have neglected to convert your answer in A to units of HA. HA direction upward