A metal rod with length L = 30.0 cm moves in a magnetic field Binn with size 0.450 T. The magnetic field Binn points inside the side (gray area), as shown in figure 2. The rod moves with velocity v = 5.00 ms^-1 in the negative y-direction as shown in the figure. Ignore gravity.

- B) Derive the equation for the potential difference over the rod and the calculated number value of this. Which point, a or b, is at the highest potential? Explain your answer.

Derive the equation for the potential difference over the rod and the calculated number value of this. Which point, a or b, is at the highest potential? Explain your answer.