Voltage

Voltage, also known as (electrical) potential difference, electric pressure, or electric tension, is the difference in electric potential between two points. In a static electric field, it corresponds to the work needed per unit of charge to move a positive test charge from the first point to the second point. In the International System of Units (SI), the derived unit for voltage is the volt (V).

relationship between voltage and current across an ideal resistor

In physics, an electronvolt (symbol eV), also written as electron-volt and electron volt, is a unit of measurement equivalent to the amount of kinetic energy gained by a single electron accelerating through an electric potential difference of one volt in a vacuum. When used as a unit of energy, the numerical value of 1 eV expressed in unit of joules (symbol J) is equal to the numerical value of the charge of an electron in coulombs (symbol C). Under the 2019 revision of the SI, this sets 1 eV equal to the exact value Historically, the electronvolt was devised as a standard unit of measur

line integral of the electric field

relations between currents and voltages on sections of any electrical circuit

scalar physical quantity homogeneous to a voltage, expressing the modulus of the force exerted on a charge in an electric field

linear circuit that produces an output voltage that is a fraction of its input voltage

electrical energy at voltages high enough to inflict harm on living organisms

potential energy that results from conservative Coulomb forces

electrical safety classification of voltages lower than mains voltage which present a low shock risk

power management technique in computer architecture, where the voltage used in a component is increased or decreased, depending upon circumstances