What Is the Minimum Frequency with Which a 200-Turn,flat Coil

question 4

Multiple Choice

What is the minimum frequency with which a 200-turn,flat coil of cross sectional area 380 cm² can be rotated in a uniform 32-mT magnetic field if the maximum value of the induced emf is to equal 7.9 V?

• A) 0.19 Hz
• B) 2.3 Hz
• C) 5.2 Hz
• D) 32 Hz
• E) ​0.032 Hz

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