What is the SI unit of electric current?
Answer and explanation
Correct answer: C. Ampere
- Step 1: Electric current is defined as the rate of flow of electric charge across a cross-section of a conductor: .
- Step 2: In the International System of Units (SI), charge is measured in coulombs and time in seconds, defining the SI unit of current as one coulomb per second, named the ampere () in honor of André-Marie Ampère.
Answer
Ampere.
Why not the others: Watt is the SI unit of electric power, Ohm is the unit of resistance, and Volt is the unit of electric potential difference.
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