OK. And I can measure the charge separation with this voltmeter here.

好。我可以这里用这个电压表测电荷分离。

To measure voltage, you'd just need a tool known as a voltmeter.

要测电压，您只需要一个工具 称为电压表。

Finally, we saw how to measure voltage and current in a real circuit using voltmeters and ammeters.

最后，我们了解了如何使用电压表和电流表测实际电路中电压和电流。

So, what you do is give the voltmeter a resistance that's so high that it's considered infinite, relative to the rest of the circuit.

所以，你正是给电压表一个如此高电阻，相对于电路其余部分，它被认为是无限。

And if a voltmeter is attached in series, you're not going to see any current flowing, because the resistance is so large!

如果串联一个电压表，您将看不到更多电流流动，因为电阻太大了！

No solution is perfect, but you can get a pretty accurate reading by attaching the voltmeter on either side of the device that you want to measure.

没有完美解决方案，但您可以通过将电压表连接到要测设备任一侧来获得相当准确读数。

With an " infinite" resistance, the same voltage is read across both the voltmeter and the device you're measuring, and a tiny amount of current ends up running through the voltmeter.

使用“无限”电阻，电压表和您正测设备上读取相同电压，并且极少电流流过电压表。

Going from  one extreme in technology to the opposite, the crews used car batteries and voltmeters to take  measurements of the conductor's resistance between tap points to precisely identify the location  of the fault within Mr. McMahon's neighborhood.

从技术一个极端转向相反技术，工作人员使用汽车电池和电压表测分接点之间导体电阻， 以精确确定麦克马洪先生附近故障位置。