Electric Currents (id: 3753ed365)

本题目来源于试卷: Electric Currents，类别为 IB物理学

[填空题]
A $12.5-\Omega$ resistor is made from a coil of copper wire whose total mass is 18.0 g. What is the diameter of the wire, and how long is it?
L =    m
A =    $ \times10^{-4 }\;m$

参考答案:
空格1: 38.79±2%  空格2: 2.58±2% 


本题详细解析:

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