本题目来源于试卷: Physics Unit18: Electric Currents，类别为 国际高中通用物理
[单选题]
The resistance of a wu0s h(lreis2q z,x q:4yiz9ybu(unh gr2 2 dl e uv8yaa*q)822ire is
A. proportional to its length and its cross-sectional area.
B. proportional to its length and inversely proportional to its cross-sectional area.
C. inversely proportional to its length and proportional to its cross-sectional area.
D. inversely proportional to its length and its cross-sectional area.
参考答案: B
本题详细解析:
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