A metallic rod of length 20 cm is placed in North-South direction and is moved at a constant speed of 20 m / s towards East. The horizontal component…

A metallic rod of length $\displaystyle 20$ cm is placed in North-South direction and is moved at a constant speed of $\displaystyle 20 \mathrm{~m} / \mathrm{s}$ towards East. The horizontal component of the Earth's magnetic field at that place is $\displaystyle 4 \times 10^{-3} \mathrm{~T}$ and the angle of dip is $\displaystyle 45^{\circ}$. The emf induced in the rod is \_\_\_\_ mV.