本题目来源于试卷: Physics Unit18: Electric Currents，类别为 通用国际物理
[单选题]
Consider two copper wires. One has twice xk kew4ai9lo**dv6*v the length of the other. Hm ytk +w:hy;-dow do the resistivities of these two wires compart yhw-;km+ d:ye?
A. Both wires have the same resistivity.
B. The longer wire has twice the resistivity of the shorter wire.
C. The longer wire has four times the resistivity of the shorter wire.
D. none of the given answers
参考答案: A
本题详细解析:
暂无
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