Physics Question from JEE Main 2026 · 23 January, Shift 1

A $20 \, \text{m}$ long uniform copper wire held horizontally is allowed to fall under the gravity ($g = 10 \, \text{m/s}^2$) through a uniform horizontal magnetic field of $0.5 \, \text{Gauss}$ perpendicular to the length of the wire. The induced EMF across the wire when it travels a vertical distance of $200 \, \text{m}$ is _____ $\text{mV}$.