What is the unit of electric current?

The unit of electric current is the Ampere, often abbreviated as Amp. This unit is fundamental in the study of electricity because it measures the flow of electric charge in a circuit. One Ampere is defined as the flow of one coulomb of charge per second. Understanding electric current is essential for analyzing electrical circuits and systems, as it helps determine how much charge is passing through a conductor at a given time, influencing everything from power consumption to temperature control in devices.

The other choices represent different electrical quantities: Volt measures electric potential or voltage, Watt quantifies electrical power (which is the product of voltage and current), and Ohm signifies resistance, defining how much a material opposes the flow of current. Each of these units is important in the field of electricity, but none directly measure the flow of electric current like the Ampere does.