As per Faraday's law induced EMF is calculated by rate of change in flux

here magnetic flux is given by

here w = angular speed of rotation
now we will use above faraday's law to find induced EMF


here
N = 700
A = 0.0550 m^2
B = 0.05 T
w = 16 rad/s
wt = 30 degree


So induced EMF in the coil will be 30.8 Volts