A square shaped coil of area 70 cm^2 having 600 turns rotates in a magnetic field of 0.4 wbm^-2, about an axis which is parallel to one of the side…

A square shaped coil of area $\displaystyle 70 \mathrm{~cm}^2$ having $\displaystyle 600$ turns rotates in a magnetic field of $\displaystyle 0.4$ $\displaystyle \mathrm{wbm}^{-2}$, about an axis which is parallel to one of the side of the coil and perpendicular to the direction of field. If the coil completes $\displaystyle 500$ revolution in a minute, the instantaneous emf when the plane of the coil is inclined at $\displaystyle 60$° with the field, will be $\displaystyle \_\_\_\_$ V. $\displaystyle \left(\right.$ Take $\displaystyle \left.\pi=\frac{22}{7}\right)$