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电多少伏和多少瓦有什么不同

更新时间: 2020-10-26 00:00:00     

伏是电压单位,瓦是功率单位;电压就好比水坝里的水,水位越高对大坝的压力也就越大;电荷集聚起来也会和河水一样对外形成压力,这就是电压;功率是指电器在单位时间内所做的功的多少,是描述做功快慢的物理量;在国际单位制中安培是基本电学单位,伏特的SI定义是以安培和力学单位瓦特导出的。

关键词: 多少 什么 不同

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