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If $0.625 \times 10^{20}$ electrons flow through a circuit each second, what is the current in the circuit?
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Final Answer

$10 \textrm{ A}$

Solution Video

OpenStax College Physics for AP® Courses Solution, Chapter 20, Problem 3 (Test Prep for AP® Courses) (0:28)

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Video Transcript

This is College Physics Answers with Shaun Dychko. To figure out the current in the circuit, we need to convert this number of electrons into number of coulombs. So we multiply the number of electrons by the charge per electron and divide by the time which we're told is one second. So we have 0.625 times ten to the twenty electrons multiplied by the elementary charge of 1.6 times ten to the minus nineteen coulombs per electron and that gives us ten amps is the current.