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The figure shows a long, straight conductor through which runs a current I. At distances a and b from it, two parallel cables are connected by a side to a resistance R. On the other side, the wires are in contact with a bar, which can move without friction at a constant speed, V. Neglecting the bar resistances and also the resistance between the bar and the sliding contacts, as well as of the self- inductance of the circuit, Find: (SHOW YOUR WORK) a) the value and direction of the induction current in the rod. b) the force necessary to keep the velocity of the rod constant. a Io