What is the SI unit for electric current?

The SI unit for electric current is the ampere. This unit measures the flow of electric charge through a conductor and is defined as the flow of one coulomb of charge per second. The ampere is a fundamental unit in the International System of Units (SI) and is important in various fields including physics and engineering, as it helps quantify how much electric charge is moving in a circuit over time.

Other units mentioned in the choices relate to different electrical properties: the volt measures electric potential or voltage, the ohm is the unit of electrical resistance, and the watt quantifies electrical power. Each of these units plays a unique role in understanding and applying the principles of electricity, but when specifically referring to electric current, the correct answer is the ampere.