AP EAMCET Medical 2017 Shift 1 Paper

A uniform magnetic field of induction ‘B' is perpendicular to the plane of paper and into the paper. A conducting rod AC of length ‘4l’ is rotating about a point ‘O' with a uniform angular velocity To' in this field as shown in the figure. If AO = l. then the potential diffference between the points ‘O’ and ‘C’ is