Problem 7 (16 points) A conducting bar of length ?) rotates with angula" frequency w about a pivot, I' at one end of the bar (see b'e ligure). The other end of the bar is in sipping contact with a stationary conducting wire in the shape of a circle (we only show a small part of that circle to keep the drawing simple). Between point P and the circular wire there is a resistor R as shown. Thus the bar, che resistor and the are form a closed conducting loop. The resistance of the bar and the circular wize are negligibly small. There is a uniform magnetic field B everywhere, it. is perpendicular to the plane of the paper as indicated. What is the induced corent in the loop? Express your answer in terms of Dew, R. and B. D