What is the base unit of electric current in the SI system?

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Multiple Choice

What is the base unit of electric current in the SI system?

Current is the rate at which electric charge flows. The SI base unit for this rate is the ampere. It matches the idea that current is charge per unit time: one ampere equals one coulomb of charge passing a point every second (I = dQ/dt, so 1 A = 1 C/s). In modern terms, the ampere is defined by fixing the elementary charge to an exact value, which ties the ampere to the flow of charge per second. The other units measure different electrical properties—voltage is potential difference, watt is power, and ohm is resistance—so they do not represent the base unit of current.

Current is the rate at which electric charge flows. The SI base unit for this rate is the ampere. It matches the idea that current is charge per unit time: one ampere equals one coulomb of charge passing a point every second (I = dQ/dt, so 1 A = 1 C/s). In modern terms, the ampere is defined by fixing the elementary charge to an exact value, which ties the ampere to the flow of charge per second. The other units measure different electrical properties—voltage is potential difference, watt is power, and ohm is resistance—so they do not represent the base unit of current.

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