In the figure below, a semicircular conductor of radiusR=0.240m is rotated about the axisACat a constant rate of110rev/min.A uniform magnetic field of magnitude1.24Tfills the entire region below the axis and is directed out of the page. In this illustration, a wire extends straight to the right from pointA, then curves up and around in a semicircle of radiusR. On the right side of the semicircle, the wire continues straight to the right to pointC. The wire lies in the plane of the page, in a region of no magnetic field. Directly below the axisACis a region of uniform magnetic field pointing out of the page,vectorB_out.If viewed from the right, the wire can rotate counterclockwise, so that the semicircular part can rotate into the region of magnetic field.