PHYSICAL QUANTITY

Potential: formulas and units of measurement

Potential: symbol φ, unit B. Formulas and explanations for Electricity.

\varphi

\text{V}

volt

KEY CONNECTIONS

Formulas

φ = \frac{W _{p}}{q}

φ = Wp / q

φ = k \frac{q}{ε r}

φ = kq / (εr)

U = φ_{1} - φ_{2}

U = φ₁ − φ₂

U = \frac{A}{q}

U = A / q

NOTATION

$\varphi$: Potential is the energy characteristic of the electric field at a selected point.
$W_{\text{p}}$: Potential energy of a charge is the energy of a charge in an electric field.
$q$: Electric charge is a quantity that determines the participation of a body in electrical interaction.
$k$: The Coulomb coefficient is the coefficient of electrical interaction of charges in a vacuum.
$\varepsilon$: Dielectric constant is a characteristic of the influence of the medium on the electric field.
$r$: The distance between charges is the length of the segment between the charges under consideration.
$U$: Electric voltage is the work done by the electric field when transferring a unit charge.
$\varphi_1$: The potential of the first point is the energy characteristic of the field at the first point.
$\varphi_2$: The potential of the second point is the energy characteristic of the field at the second point.
$A$: Work is a measure of energy transferred when a force is applied.

THEORY

PRACTICE