Current

Current could be understood as the flow of electricity on a circuit. Note the difference between KBhPHYS201Voltage — which is a measure of the pressure of electrons — and current, which is a measure of the "volume of electrons per second".

Use the variable \(I\), a unit \(\frac{C}{s}\), \(Amps\), to measure current. This also equals \(\frac{\Delta V}{Resistance}\). Big resistance, little current. Current is measured in a unit \(\frac{C}{s}\), which intuitively makes sense — Current/second is kind of like \(\frac{m^3}{s}\) — it measures, roughly, the "amount of flow"/second.

\definition{Current $I$}{A value measured in unit \(\frac{C}{s}\), a.k.a. \(Amps\) that measures electron flow}