A circular coil with a radius of (0.12 , textm) and (20) turns is rotated in a uniform magnetic field of (1.6 , textT). The coil rotates with a constant frequency of (1.4 , textHz). Determine the maximum value of the emf induced... 
a) in the coil. 
b) across the field. 
c) due to the rotation. 
d) within the magnetic field.