Most Telephone Cables Are Made of Copper Wire of Either $\Omega$

question 68

Multiple Choice

Most telephone cables are made of copper wire of either 24 or 26 gauge.If the resistance of 24-gauge wire is 137 $\Omega$ /mile and the resistance of 26-gauge wire is 220 $\Omega$ /mile,what is the ratio of the diameter of 24-gauge wire to that of 26-gauge wire?

• A)1.6
• B)1.3
• C)0.62
• D)0.79
• E)0.88

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