What is the minimum frequency with which a 200-turn,flat coil of cross sectional area 300 cm2 can be rotated in a uniform 30-mT magnetic field if the maximum value of the induced emf is to equal 8.0 V?
A) 0.030 Hz
B) 2.9 Hz
C) 7.1 Hz
D) 8.4 Hz
Correct Answer:
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