What is a volt?

A volt is defined as a unit of electrical pressure, which is crucial in understanding how electrical systems function. It represents the potential difference in electric charge between two points in a circuit. When there is a voltage applied between these points, it causes electrons to flow, creating an electric current.

This concept of electrical pressure is similar to water pressure in a pipe; higher pressure means that a greater potential for current flow exists. The reason for measuring electrical pressure is to assess how much energy can be pushed through a given circuit, which is essential for determining the performance and safety of electrical systems.

Understanding the role of voltage helps with the implication of other related concepts, such as current (flow of electrons) and resistance (opposition to flow), which together influence the overall functionality of electrical circuits.