We also talked about transformers, and how they use mutual inductance to change voltage.

我们还谈到变压器，以及 它们使用互感来改变电压。

And because we have an inductance L and a resistance R, we call this configuration an LR circuit.

我们有一个电感 L 和一个电阻 R，所以我们称种配置 LR 电路。

Finally, we described how mutual inductance is used in wireless chargers.

最后，我们描述 在无线充电器中使用互感。

Inductance, by the way, is expressed in units called Henrys.

顺便说一下，电感以 称亨利的单位表示。

L is a constant, known as the inductance, signifying how well that specific coil induces an opposing current, depending on its shape and size.

L。L 是一个常数，称电感，表示特定线圈感应反向电流的程度，具体取决于其形状和大小 。

Mutual inductance is also used in lots of other things, too – like wireless chargers, for example.

互感也被用于许多其他方面——例无线充电器。

All those voltage changes are made using transformers, which take advantage of something called mutual inductance, where a change in the current in one coil leads to a change in emf in another, nearby coil.

所有些电压变化都是使用变压器进行的，变压器利用一种称互感的东西，其中一个线圈中的电流变化会导致附近另一个线圈的电动势发生变化。