What Is the Minimum Frequency with Which a 300-Turn,flat Coil

Multiple Choice

What is the minimum frequency with which a 300-turn,flat coil of cross sectional area 370 cm² can be rotated in a uniform 25-mT magnetic field if the maximum value of the induced emf is to equal 8.6 V?

A) 0.20 Hz
B) 2.2 Hz
C) 4.9 Hz
D) 31 Hz
E) 0.031 Hz