Alternating Current

A square shaped coil of area \(70 \mathrm{~cm}^{2}\) having 600 turns rotates in a magnetic field of \(0.4 ~\mathrm{wbm}^{-2}\), 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 500 revolution in a minute, the instantaneous emf when the plane of the coil is inclined at \(60^{\circ}\) with the field, will be ____________ V. (Take \(\pi=\frac{22}{7}\))