The armature coil of a generator has 20 turns and its area is $0.127\, m^2$. How fast approximately should it be rotated in a magnetic field of $0.2\, Wbm^{-2}$, so that the peak value of induced emf is 160 V? |
20 rps 50 rps 100 rps 200 rps |
50 rps |
The correct answer is Option (2) → 50 rps |