A Conducting Bar of Length L Rotates with a Constant

question 38

Multiple Choice

A conducting bar of length L rotates with a constant angular speed of +2.0 rad/s about a pivot P at one end, as shown. A uniform magnetic field (magnitude = 0.20 T) is directed into the paper. If L = 0.40 m, what is the potential difference, VA − VP?

• A)−12 mV
• B)+8.0 mV
• C)−8.0 mV
• D)+12 mV
• E)−16 mV

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