A Conducting Bar of Length L Rotates in a Counterclockwise

question 24

Multiple Choice

A conducting bar of length L rotates in a counterclockwise direction 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 − VB?

• A)+24 mV
• B)−24 mV
• C)+16 mV
• D)−16 mV
• E)+32 mV

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