What is voltage? - Electricity Explained - (3)

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John
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电压可以用水压来解释，类似于水塔和注射器的例子。电池通过负极（阳极）和正极（阴极）产生正负压力，推动电子在电路中流动，形成电流。电压是电源提供的电势差，决定了电流的强度。电池的电压由能量消耗和电荷计算得出，例如普通AA电池的电压为1.5伏。连接多个电池可以增加总电压，而并联连接不会提高电压。了解电压的概念有助于理解电流如何在电路中工作。
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