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 yw2y/th7i/jlv3 l t j5wires ur9d ipeg1f6y4h:g7y. One has twice the length of the other. How do the resistivities i r7 yy6 f1ugh9eg4p:dof these two wires compare?
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
| 
