At what frequency should a 200-turn, flat coil of cross sectional area of 300 cm2 be rotated in a uniform 30-mT magnetic field to have a maximum value of the induced emf equal to 8.0 V?
a. 7.5 Hz
b. 7.1 Hz
c. 8.0 Hz
d. 8.4 Hz
e. 16 Hz
b
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