A Merry-Go-Round Has an Area of 300 M² and Spins

question 36

Multiple Choice

A merry-go-round has an area of 300 m² and spins at 2 rpm about a vertical axis at a place where the Earth's magnetic field is vertical and has a magnitude of 5 * 10^-5 T.The emf around the rim is:

• A)0 V
• B)0.5 mV
• C)3.1 mV
• D)15 mV
• E)190 mV

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