This total is called the equivalent resistance.

这个总和称为等效电阻。

With that equivalent resistance, you can then know what the resulting current is in the circuit.

有了那个替换电阻，你就可以知道 电路中产生的电流是多少。

Now, remember how you add up all the resistances to find an equivalent resistance for resistors in a series?

现在还记得如何将所有电阻相加以找到串联电阻的等效电阻吗？

And to find the equivalent resistance of resistors in series, you just add their resistances together.

要找到串联电阻的等效电阻，只需将它们的电阻相加即可。

Our goal is to simplify everything down to one resistor, which will have the equivalent resistance of all of these resistors combined.

我们的目标是将所有内容简化为一个电阻器，该电阻器将具有所有这些电阻器的等效电阻组合。

Since the equivalent resistance is half of what it used to be, and the voltage hasn’t changed, the current increases to double its original value.

由于等效电阻是原来的一半， 电压没有变化， 电流增加到原来的两倍。

Since the equivalent resistance is half of what it used to be, and the voltage hasn't changed, the current increases to double its original value.

由于等效电阻是原来的一半，而且电压没有变化，所以电流增加到原来的两倍。

This shows you that the equivalent resistance for a parallel setup of resistors will actually be smaller than any one of the resistors in the circuit.

这表明电阻并联的等效电阻实际上小于电路中电阻的等效电阻。

And with that, you're left with only two resistors in series, which you can combine to form a single resistor with the equivalent resistance of 15.38 Ohms.

这样就只剩下两个串联电阻，您可以将它们组合成一个等效电阻为 15。38 欧姆的单个电阻。

For example, you can take a bunch of resistors in a circuit, find their equivalent resistance, and then use the voltage to figure out what the current is.

例如，您可以在电路中取多个电阻器，找到它们的等效电阻，然后使用电压来确定电流是多少。

And since the voltage for each resistor is the same in parallel, you can cancel the voltage term out of the entire equation and we’re left with the equation for parallel equivalent resistance.

由于并联时每个电阻的电压相同， 您可以从整个等式中取消电压项， 剩下并联等效电阻的等式。

Using Ohm's Law, you can find that the current through a circuit with a 20 volt battery and an equivalent resistance of 15.38 Ohms is about 1.30 Amperes.

使用欧姆定律，您可以看到通过具有 20 伏电池和 15。38 欧姆等效电阻的电路的电流约为 1。30 安培。

And since the voltage for each resistor is the same in parallel, you can cancel the voltage term out of the entire equation and we're left with the equation for parallel equivalent resistance.

由于每个电阻器的电压是并联的，您可以从整个方程中删除电压持续时间，剩下的方程是并联等效电阻。

For resistors in parallel, meanwhile, you use a different method – one that gives you a resistor with an equivalent resistance that's smaller than any of the individual resistors in the branches.

对于并联使用的电阻器，您使用不同的方法 - 为您提供一个等效电阻小于分支中任何单个电阻的电阻。