Consider two copper wires of equal cross-sectional area.One wire has 3 times the length of the other.How do the resistivities of these two wires compare?
A) Both wires have the same resistivity.
B) The longer wire has 3 times the resistivity of the shorter wire.
C) The longer wire has 9 times times the resistivity of the shorter wire.
D) The longer wire has 27 times times the resistivity of the shorter wire.
Correct Answer:
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