Two Copper Wires, One with Twice the Diameter of the Other

question 64

Multiple Choice

Two copper wires, one with twice the diameter of the other, have the same current flowing through them. If the thinner wire has a drift velocity v₁, and the thicker wire has a drift velocity v₂, how do the drift velocities compare?

• A) v₁ = v₂
• B) v₁ = 2 v₂
• C) 2 v₁ = v₂
• D) v₁ = 4 v₂
• E) 4 v₁ = v₂

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