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 q9, 4 4rx*lbwczy b)caweblz 3wx9 x:dbli0 :7h m)h-axires. One has twice the length of the other. How do the resistivities of these two wires compar7ixaw)0l :h9bbe:dhz3- lx xme?
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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