PHYSICAL QUANTITY

Potential: formulas and units of measurement

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

φvolt

KEY CONNECTIONS

Formulas

φ = Wp / q

φ = kq / (εr)

U = φ₁ − φ₂

U = A / q

NOTATION

: Potential is the energy characteristic of the electric field at a selected point.
: Potential energy of a charge is the energy of a charge in an electric field.
: Electric charge is a quantity that determines the participation of a body in electrical interaction.
: The Coulomb coefficient is the coefficient of electrical interaction of charges in a vacuum.
: Dielectric constant is a characteristic of the influence of the medium on the electric field.
: The distance between charges is the length of the segment between the charges under consideration.
: Electric voltage is the work done by the electric field when transferring a unit charge.
: The potential of the first point is the energy characteristic of the field at the first point.
: The potential of the second point is the energy characteristic of the field at the second point.
: Work is a measure of energy transferred when a force is applied.

THEORY

PRACTICE

Topics in order: the concepts, quantities and formulas of a lesson with explanations and examples.

Statements, answer options and a detailed walkthrough for every topic of the course.

A 10-question check-up, exercises with answer checking, and saved progress.