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Multiple Choice

What is the SI unit of electric current?

Electric current measures how much electric charge passes a point each second. That rate is quantified in the SI unit called the ampere, abbreviated A. In practical terms, one ampere means a flow of one coulomb of charge per second. So if 1 C moves past a point every second, the current is 1 A. The other units listed correspond to different quantities: volt measures potential difference, ohm measures resistance, and joule measures energy. This is why Ampere is the unit used for current.

Electric current measures how much electric charge passes a point each second. That rate is quantified in the SI unit called the ampere, abbreviated A. In practical terms, one ampere means a flow of one coulomb of charge per second. So if 1 C moves past a point every second, the current is 1 A. The other units listed correspond to different quantities: volt measures potential difference, ohm measures resistance, and joule measures energy. This is why Ampere is the unit used for current.