What SI unit measures electric current?

What SI unit measures electric current?

• A. Volt
• B. Ampere
• C. Ohm
• D. Watt

Answer: (B)

The SI unit that measures electric current is the Ampere. Current is defined as the flow of electric charge through a conductor, and the Ampere quantifies this flow. Specifically, one Ampere is defined as one coulomb of charge passing through a point in a circuit per second. This unit is crucial in understanding how much electric charge is moving in a circuit over time, which directly influences the operation of electrical devices and systems. The other units mentioned serve different purposes in the realm of electrical measurements. The Volt measures electrical potential or voltage, which is the force that pushes electric charges through a conductor. The Ohm measures resistance, which indicates how much a material opposes the flow of electric current. The Watt measures electrical power, which reflects the rate at which electrical energy is consumed or converted. Each of these units plays a vital role in electrical engineering, but the Ampere is specifically designated for measuring electric current.

The SI unit that measures electric current is the Ampere. Current is defined as the flow of electric charge through a conductor, and the Ampere quantifies this flow. Specifically, one Ampere is defined as one coulomb of charge passing through a point in a circuit per second. This unit is crucial in understanding how much electric charge is moving in a circuit over time, which directly influences the operation of electrical devices and systems.

The other units mentioned serve different purposes in the realm of electrical measurements. The Volt measures electrical potential or voltage, which is the force that pushes electric charges through a conductor. The Ohm measures resistance, which indicates how much a material opposes the flow of electric current. The Watt measures electrical power, which reflects the rate at which electrical energy is consumed or converted. Each of these units plays a vital role in electrical engineering, but the Ampere is specifically designated for measuring electric current.