Which law states that current through a conductor between two points is directly proportional to the voltage across the two points?

The statement that current through a conductor between two points is directly proportional to the voltage across those two points is a description of Ohm's Law. This law establishes a fundamental relationship in electrical circuits, which can be expressed mathematically as V = I * R, where V is voltage, I is current, and R is resistance. According to this law, if the resistance remains constant, an increase in voltage will result in a proportional increase in current.

Understanding Ohm's Law is crucial for analyzing and designing electrical circuits, as it helps predict how changes in voltage will affect current flow, which is essential for various applications in electronics and electrical engineering. This principle is foundational for both theoretical and practical aspects of electricity.