The horizontal component of the earth’s magnetic field at a place is $3\times {10}^{-4}T$  and the dip is  $\theta ={\tan }^{-1}(4/3).$ A metal rod of length $0.25 m$ placed in the north-south position is moved at a constant speed of $10 m/s$ towards the east. The e.m.f induced in the rod will be _____mV.