# Metal Strip Magnetic Field question

1. Oct 5, 2006

### tigert2004

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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Last edited: Oct 5, 2006
2. Oct 5, 2006

### tigert2004

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