If 6.25 x 10^18 electrons pass a point in one second, the current is approximately?

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Get ready for the NCCER Introduction to Electrical Circuits exam. Study with multiple choice questions, each question comes with hints and explanations. Ace your exam with confidence!

Multiple Choice

If 6.25 x 10^18 electrons pass a point in one second, the current is approximately?

Explanation:
Current is the rate at which charge flows past a point. Each electron carries about 1.602 × 10^-19 coulombs. Multiply by the number of electrons per second: 6.25 × 10^18 × 1.602 × 10^-19 C ≈ 1.0 C per second. Since current is coulombs per second, the result is about 1 ampere. In other words, roughly one coulomb of charge passes each second, which corresponds to one ampere of current.

Current is the rate at which charge flows past a point. Each electron carries about 1.602 × 10^-19 coulombs. Multiply by the number of electrons per second: 6.25 × 10^18 × 1.602 × 10^-19 C ≈ 1.0 C per second. Since current is coulombs per second, the result is about 1 ampere. In other words, roughly one coulomb of charge passes each second, which corresponds to one ampere of current.

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