電位差的用法和樣例：
例句
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電（子）之所以流動，是因為乾電池上正負兩端上的電的狀況有差別所致，對於這種差別，我們稱之為「電位差」。
The difference in the electrical condition of the terminals "+" and "-" of the dry cell which tends to make electricity flow we describe as a difference of electrical potential.
