Armature of the simple ac generator consists of 20 circular loops of wire, each with a radius of 10 cm. It is rotated with a frequency of 60 Hz in the uniform magnetic field of 900 mT.
a) Determine the highest emf induced in the loops?
b) How frequently is the value attained?
c) If the time-period in section B were cut in half, what would be the latest maximum emf value?