已知导线中流过的电流，只要测出导线两端电位差的伏特值，就能很容易得出任何长度导线的电阻值。
The resistance of any length of a conducting wire is easily measured by finding the potential difference in volts between its ends when a known current is following.
你可以选择使用内存导线两端卷曲相反，如果需要的话。
You can choose to use a memory wire end crimp instead, if desired.
一个铜戒指，一铜导线组成的单回路的两端连接，将做同样的事情，但不会进一步上升，因为它更大的重量高。
A copper ring, consisting of a single loop of copper wire with the ends connected, will do the same thing, but will not climb as high because of its greater weight.
应用推荐