Question

A conducting rod rotates with a constant angular velocity 'w' about the axis which passes through point 'O' and perpendicular to its length. A uniform magnetic field 'B' exists parallel to the axis of the rotation. Then potential difference between the two ends of the rod is : (1) 6Bwl^2 (2) Bwl^2 (3) 10Bwl^2 (4) Zero

Answer 1