9. A long, straight wire carries a constant current I. A metal rod of length L moves at velocity v relative to the wire, as shown. The distance between the wire and rod is d. What is the potential difference between the ends of the rod? (A)(B)(C)(D)(E)

8. As shown, a charge particle q is inject into a space with uniform electric field E = E₀ x, where E₀ is the absolute value of the electric field and x is the unit vector along the x-axis. The initial velocity of the particle is v = v₀y, where y is the unit vector along the y-axis. A magnetic field B is applied into the same space to maintain the velocity of the particle. Which one of the following fields is the correct one? (A) B =(B) B = (C) B =(D) B =(E) B =

9. A long, straight wire carries a constant current I. A metal rod of length L moves at velocity v relative to the wire, as shown. The distance between the wire and rod is d. What is the potential difference between the ends of the rod?

(A)
(B)
(C)
(D)
(E)

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