Three Wires of the Same Diameter and Length Are Made

question 27

Multiple Choice

Three wires of the same diameter and length are made from three different metals: copper (ρ​ = 1.7 × 10^-8 Ω·m) ,aluminum (ρ​ = 2.7 × 10^-8 Ω·m) ,and silver (ρ​ = 1.6 × 10^-8 Ω·m) .Which wire has the least resistance?

• A)the aluminum wire
• B)the silver wire
• C)the copper wire
• D)Since insufficient information is given to find the resistance of each wire,one cannot find the answer.

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