6.If we know the system has a total resistance of 15 Ohms, we can divide the battery's voltage by the resistance, to find that it has a current of 0.6 amperes, or 600 milliamperes.
如果我们知道系统的总电阻为 15 欧姆,我们可以将电池电压除以电阻,得出它的电流为 0。6 
,即 600 毫
。
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