At What Frequency Should a 200-Turn, Flat Coil of Cross

question 14

Multiple Choice

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

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