Magnetic Effects of Current and Magnetism: JEE Main 2024 Physics question

A rod of length $60 \mathrm{~cm}$ rotates with a uniform angular velocity $20 \mathrm{~rad} \mathrm{s}^{-1}$ about its perpendicular bisector, in a uniform magnetic filed $0.5 T$. The direction of magnetic field is parallel to the axis of rotation. The potential difference between the two ends of the rod is _________ V.