ODBAC is a fixed rectangular conductor of negligible resistance (CO is not connected) and OP is a conductor which rotates clockwise with an angular velocity `omega` [Fig EP 6.24]. The entire system is in a uniform megnetic field B whose direction is along the normal to the surface of the rectangular conductor ABDC. The condutor OP is in electric contact with ABDC. The rotating conductor has a resistance of `lambda` per unit length. Find the current in the rotating conductor, as it rotates by 180.