A Conducting Bar of Length L Rotates with a Constant

question 53

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,V_A - V_P?

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