What is the SI unit of electric current?

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Prepare for the NCCER Introduction to Electrical Circuits exam. Utilize flashcards and multiple choice questions with hints and explanations to excel on your test.

Multiple Choice

What is the SI unit of electric current?

Explanation:
Electric current is the rate at which electric charges flow past a point. The SI unit for that rate is the ampere, abbreviated A. One ampere means that one coulomb of charge passes a given point every second. That ties directly to what current measures—the flow of charge over time. The volt measures electrical potential difference, the watt measures power, and the coulomb is a unit of charge, not a rate. So the unit that matches the concept of current as a flow rate is the ampere.

Electric current is the rate at which electric charges flow past a point. The SI unit for that rate is the ampere, abbreviated A. One ampere means that one coulomb of charge passes a given point every second. That ties directly to what current measures—the flow of charge over time. The volt measures electrical potential difference, the watt measures power, and the coulomb is a unit of charge, not a rate. So the unit that matches the concept of current as a flow rate is the ampere.

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