No.of truns N = 26
daimeter D = 0.6 m
radius R = 0.3 m
Earth's magnetic field B = 50 ?T
                                    =
50 * 10 ^ -6 T
time interval dt = 0.17 s
Average induced emf E = N A [ B cos 0 - B cos 180] / dt
                                     =
2NBA / dt
where A = area of the loop = ? R ^ 2
                                           =0.2826
m ^ 2
Substitute value to get average emf at 0.17 s.
E = 4.32*10^-3 V.
After t = 0.085 s
So, E = 8.6*10^-3 V
