What is voltage defined as?

Voltage is defined as electromotive force, which is the energy per unit charge that causes electric charge to flow through a circuit. It can be thought of as the driving force that pushes electric current through a conductor, allowing electrical energy to be transferred from one point to another.

In practical terms, voltage is measured in volts and represents the potential difference between two points in an electrical field. This potential difference is essential for creating a current in a circuit when a conductive pathway is available. Understanding voltage is fundamental for anyone working with electrical systems, as it relates directly to how devices receive the power they need to operate.

The other terms mentioned in the question relate to different concepts in electrical theory. Current flow refers to the movement of electric charge through a conductor, measured in amperes. Electrical resistance is the opposition to the flow of current and is measured in ohms. Energy consumed relates to the amount of electrical energy used by a device over time, normally measured in watt-hours or kilowatt-hours, which is influenced by both voltage and current but is not a measure of voltage itself.