The SI unit of charge is the coulomb (C).
The coulomb is a derived unit, meaning it's defined in terms of other base SI units. Specifically, one coulomb is the amount of electric charge transported by a current of one ampere flowing for one second.
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Definition: 1 C = 1 A ⋅ s
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Significance: The coulomb is a fundamental unit in electromagnetism, used to measure the quantity of electric charge, whether it's the charge of an electron or the charge stored in a capacitor.
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Example: The elementary charge (the charge of a single proton or the absolute value of the charge of a single electron) is approximately 1.602 × 10⁻¹⁹ coulombs.
