That’s a total voltage drop of 5 Volts.

这是 5 伏的总压降。

The voltage gain across the battery is 20 Volts, but you don’t know the voltage drops across the resistors.

电池两端的电压增益为 20 伏， 但您不知道电阻两端的电压降。

Thanks to Ohm’s law, you can substitute the voltage drop across each resistor with the current times the resistance.

多亏了欧姆定律， 您可以用电流乘以电阻来代替每个电阻器上的压降。

And this change in potential energy is just like a voltage drop.

而这种势能的变化是一样的 像电压降。

This internal voltage drop, according to Ohm's law, is equal to the current through the circuit times the internal resistance.

根据欧姆定律，这个内部电压降等于通过电路的电流乘以内部电阻。

And while all resistors along the same wire have the same current, they each have different voltages dropping across them.

虽然同一根导线上的所有电阻器都具有相同的电流，但它们各自具有不同的电压。

Every voltage drop peaks at a different time, but the sum will always equal that of the source.

每个电压降在不同的时间达到峰值， 但总和将始终等于源的电压降。

You know that there’s a voltage gain across the battery and a voltage drop across both resistor 2 and resistor 1.

你知道电池两端有电压增益， 电阻 2 和电阻 1 都有电压降。

This internal voltage drop, according to Ohm’s law, is equal to the current through the circuit times the internal resistance.

根据欧姆定律， 这个内部电压降等于通过电路的电流乘以内部电阻。

The voltage drop across each resistor is proportional to its resistance.

每个电阻上的电压降成正比 对他的抵抗。