A coil of cross-sectional area A lies in a uniform magnetic field B with its plane perpendicular to the magnetic field. The normal to the coil makes an angle of 0° with the magnetic field. The coil rotates at a uniform rate to complete one rotation in time T. Determine the average induced emf in the coil during the interval when the coil rotates from 0° to 90°
1
\(\frac{{4BA}}{T}\)
2
\(\frac{{2BA}}{T}\)
3
\(\frac{{BA}}{T}\)
4
\(\frac{{BA}}{{2T}}\)