Metal Strip Magnetic Field question

AI Thread Summary
A metal strip measuring 7.50 cm by 0.550 cm and 0.800 mm thick moves through a magnetic field of 1.00 mT, generating a potential difference of 3.90 µV. The discussion focuses on calculating the speed of the strip using the formula v = V/(Bd). An error was identified in the initial calculations due to using an incorrect value for the thickness (d). Correcting this value is crucial for accurately determining the speed. The conversation emphasizes the importance of using the right parameters in magnetic field calculations.
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A metal strip 7.50 cm long, 0.550 cm wide, and 0.800 mm thick moves with constant velocity v through a magnetic field B = 1.00 mT pointing perpendicular to the strip, as shown in Figure 28-35. A potential difference of 3.90 µV is measured between points x and y across the strip. Calculate the speed v

I am getting since vd =i/neA and then replace n by Bi/Vle equaling Vl/BA then since l= A/d you get V/Bd But that does not give me the right answer
 

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I realized what I was doing wrong. I was using the wrong value for d
 

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