An aeroplane, with its wings spread 10 m, is flying at a speed of 180 km / h in a horizontal direction. The total intensity of earth's field at that…

An aeroplane, with its wings spread $\displaystyle 10$ m , is flying at a speed of $\displaystyle 180 \mathrm{~km} / \mathrm{h}$ in a horizontal direction. The total intensity of earth's field at that part is $\displaystyle 2.5 \times 10^{-4} \mathrm{~Wb} / \mathrm{m}^2$ and the angle of dip is $\displaystyle 60^{\circ}$. The emf induced between the tips of the plane wings will be \_\_\_\_.