What principle describes the flow of electrons from high to low voltage?

The principle that describes the flow of electrons from high to low voltage is commonly understood through Ohm's Law. Ohm's Law states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance of the conductor. This means that when there is a difference in voltage (or potential difference) across a conductor, electrons will flow from the area of higher voltage to the area of lower voltage, creating an electric current.

By understanding Ohm's Law, it's clear that voltage (measured in volts) is a key driver for current flow in electrical circuits. This principle is foundational in electronics and electrical engineering, as it establishes the relationship that governs how electric circuits function.

In contrast, convection refers to the transfer of heat through fluid motion, conduction pertains to the transfer of heat through direct contact, and electromagnetic induction involves the generation of electromotive force due to a changing magnetic field. Although these concepts are relevant in physics, they do not describe the specific flow of electrons as effectively as Ohm's Law does, particularly regarding voltage differences.