Consider Two Copper Wires of Equal Cross-Sectional Area

question 78

Multiple Choice

Consider two copper wires of equal cross-sectional area.One wire has 3 times the length of the other.How do the resistances of these two wires compare?

• A)Both wires have the same resistance.
• B)The longer wire has 1/3 the resistance of the shorter wire.
• C)The longer wire has 3 times the resistance of the shorter wire.
• D)The longer wire has 9 times times the resistance of the shorter wire.
• E)The longer wire has 27 times times the resistance of the shorter wire.

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