Problem 2 (Magnetic field) Metallic semiring of radius R is located in uniform constant magnetic field B. Magnetic field is perpendicular to the semiring plate. The center of semiring is connected with semiring by two conductors (see Fig). Conductor AO is fixed in space. Conductor OC is rotating around point O with constant angular velocity lomega. The resistance of all conductors per unit length is \ ho. Find current in loop AOC when the angle between conductors AO and OC is \\pi. B O