Emax = ωNBA
              Â
Given angular speed  ω = 1230 rpm = 1230 * 2π/60
                                                     Â
= 128.8 rad/s
                Â
No. of
turns             Â
NÂ Â =Â Â 158
                 Â
Magnetic
field        Â
BÂ Â =Â Â 3.81 *
10-5Â Â Â T
                 Â
Area of coil  A = Ï€ * r2  Â
=Â Â Â 3.14 * 0.1252
                                                              Â
Emax = 0.038 V
    Â