The SI unit ampere is used to measure which quantity?

The SI unit ampere is used to measure which quantity?

• A. Electric current
• B. Temperature
• C. Time
• D. Mass

Answer: (A)

Ampere is the unit used for electric current, the flow rate of electric charge in a circuit. One ampere means one coulomb of charge passes a point each second, so it directly measures how much charge is moving per unit time. That’s why it’s used to quantify current. It’s not a unit for temperature, time, or mass, which are measured in kelvin, seconds, and kilograms respectively. In practice, an ammeter is placed in series to measure how much charge—and thus how much current—is moving through a component.

Ampere is the unit used for electric current, the flow rate of electric charge in a circuit. One ampere means one coulomb of charge passes a point each second, so it directly measures how much charge is moving per unit time. That’s why it’s used to quantify current. It’s not a unit for temperature, time, or mass, which are measured in kelvin, seconds, and kilograms respectively. In practice, an ammeter is placed in series to measure how much charge—and thus how much current—is moving through a component.