You Can Pay a Lot of Money for Fancy Connecting

question 51

Multiple Choice

You can pay a lot of money for fancy connecting cables between your audio/video equipment components. Some of the more expensive ones use silver wire rather than copper. Calculate the difference in resistance between a silver and a copper cable with the same 12-gauge wire with diameter of 2.05 mm and length of 3 m hence total length = 6m) . Use ρ_Cu = 1.7 × 10^-8 Ω/m and ρ_Ag = 1.6 × 10^-8 Ω/m. Unfortunately, or fortunately, there are many other factors that go into making an interconnect cable than simple resistance considerations.)

• A) 4.1 × 10^-3 Ω
• B) 1.8 × 10^-3 Ω
• C) 2.9 × 10^-2 Ω
• D) 9.0 × 10^-4 Ω
• E) 3.1 × 10^-2 Ω

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