SI unit of electric current.

## **The reasoning** The **SI unit of electric current is the Ampere (A)**, named after French physicist André-Marie Ampère. Think of it this way: electric current measures the **flow of electric charge** through a conductor — basically, how many charged particles are passing through a point per second. The formal definition: **1 Ampere = 1 Coulomb of charge flowing per second** (I = Q/t). So Ampere is specifically the unit that measures the *rate of charge flow*, which is exactly what current is. --- ## **Why the wrong options tempt you** - **Volt** measures *electric potential difference* (the "push" that drives current) — don't confuse the force with the flow! - **Coulomb** measures *electric charge itself* (the quantity of electricity), not how fast it flows. - **Ohm** measures *resistance* (opposition to current flow) — the obstacle, not the current itself. All four terms relate to electricity, so they're designed to confuse you if you haven't learned their distinct roles. --- ## **Quick takeaway** **Ampere = current (the flow), Volt = voltage (the push), Coulomb = charge (the quantity), Ohm = resistance (the obstacle).** Remember: "**A**mpere for **A**mount of flow per second!"