쿨롱
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정의
1 A의 전류가 1초 동안 운반하는 전하량으로 정의되는 SI 전하 단위(1 C = 1 A·s), 약 6.242×10¹⁸개의 기본 전하에 해당한다.
설명
Named after Charles-Augustin de Coulomb. A standard AA battery holds roughly 9,000–10,000 coulombs of charge. The elementary charge of one electron is 1.602×10⁻¹⁹ coulombs — meaning one coulomb represents about 6.24 billion billion electrons. Phone battery capacity is measured in milliamp-hours (mAh); a 3,000 mAh battery stores 3 A × 3,600 s = 10,800 C.
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