V2EX farad

Farad

释义 Definition

farad(法拉):电容的国际单位,表示电容器储存电荷的能力。1 F 意味着当电容器两端电压改变 1 伏特(V) 时,电荷量改变 1 库仑(C)。(日常电路中常见的是微法 μF、纳法 nF、皮法 pF。)

发音 Pronunciation

/fr.d/

例句 Examples

A capacitor with 10 microfarads can store more charge than one with 1 microfarad.
10 微法的电容器比 1 微法的电容器能储存更多电荷。

The engineer calculated the circuit’s time constant using resistance and capacitance in farads to predict how quickly the voltage would rise.
工程师用电阻和以法拉计的电容计算电路的时间常数,以预测电压上升的速度。

词源 Etymology

farad 来自法国物理学家 迈克尔法拉第(Michael Faraday) 的姓氏。为纪念他在电磁学与电化学方面的重要贡献,人们用他的名字来命名电容单位。

相关词 Related Words

文学与作品 Literary Works

  • 《The Feynman Lectures on Physics》(《费曼物理学讲义》):在电学与电路相关章节中会使用 farad 讨论电容及其单位。
  • 《Introduction to Electrodynamics》(David J. Griffiths,《电动力学导论》):在涉及电容、电介质与单位制的内容中常出现 farad
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