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understanding 1 coulomb of electric charge

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114 views0likes5:43Karnanphysics2026Original Release: 2026-07-17

One coulomb is the amount of electric charge that flows through a wire in one second when the current is one ampere, equivalent to approximately 6.24 × 10^18 electrons; two charges of one coulomb placed one meter apart in vacuum exert a repulsive force of 9 × 10^9 Newtons on each other, and a typical smartphone battery holding 18,000 coulombs contains the equivalent charge of about 400 lightning strikes.