Coulomb
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Definition
Die SI-Einheit der elektrischen Ladung, definiert als die von einem Strom von einem Ampere in einer Sekunde transportierte Ladung (1 C = 1 A·s).
Erklärung
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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RELATED TERMS
Meter
Die SI-Basiseinheit der Länge, definiert als die Strecke, die Licht in 1/299.792.458 Sekunden zurücklegt.
Kilogramm
Die SI-Basiseinheit der Masse, definiert über das Planck'sche Wirkungsquantum.
Sekunde
Die SI-Basiseinheit der Zeit, definiert über den Cäsium-133-Atom.
Kelvin
Die SI-Basiseinheit der Temperatur, beginnend beim absoluten Nullpunkt.
Ampere
Die SI-Basiseinheit der elektrischen Stromstärke.