Consider Two Copper Wires with Circular Cross-Sections and Equal Lengths $\sqrt { 3 }$

question 55

Multiple Choice

Consider two copper wires with circular cross-sections and equal lengths. One wire has 3 times the diameter of the other. How do the resistances of these two wires compare?

• A) The thicker wire has 1/3 the resistance of the thinner wire.
• B) The thicker wire has 1/9 the resistance of the thinner wire.
• C) The thicker wire has 3 times the resistance of the thinner wire.
• D) The thicker wire has 9 times the resistance of the thinner wire.
• E) The thicker wire has \(\sqrt { 3 }\) times the resistance of the thinner wire.

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