法拉
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定义
SI电容单位，定义为在施加1伏特电位差时存储1库仑电荷的电容值（1 F = 1 C/V）。
解释
Named after Michael Faraday. One farad is an enormous capacitance — most electronic capacitors are measured in microfarads (µF, 10⁻⁶ F), nanofarads (nF), or picofarads (pF, 10⁻¹² F). Supercapacitors used in electric vehicles and energy storage can reach thousands of farads. A 1 F capacitor charged to 1 V stores 0.5 joules of energy.
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