A Coil Is Rotated in a Magnetic Field Generating an Emf

question 12

Multiple Choice

A coil is rotated in a magnetic field generating an emf given by emf = NBAw sin q,where q = wt.At which angle q is the emf half of its maximum value?

• A)0 \(\degree\)
• B)30 \(\degree\)
• C)45 \(\degree\)
• D)60 \(\degree\)

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