What mathematical relationship do you see between voltage and current?

The mathematical relationship between voltage (V) and current (I) in an electrical circuit is described by Ohm's Law, which states that V = I * R, where R is the resistance in ohms. This means that voltage is directly proportional to current, with resistance acting as the proportionality factor. As resistance increases, for a constant voltage, the current decreases; conversely, for a constant resistance, an increase in voltage results in an increase in current. This relationship is fundamental in understanding how electrical circuits operate.