PHYSICAL QUANTITY

Electric charge: formulas and units of measurement

Electric charge: symbol q, Q, unit Cl. Formulas and explanations for Electricity.

q,\ Qq, Q\text{Кл}coulomb

KEY CONNECTIONS

Formulas

q=Itq = It

F=k\frac{\left|q_1q_2\right|}{\varepsilon r^2}F = k|q₁q₂| / (εr²)

E=\frac{F}{q}E = F / q

E=k\frac{\left|q\right|}{\varepsilon r^2}E = k|q| / (εr²)

\varphi=k\frac{q}{\varepsilon r}φ = kq / (εr)

U=\frac{A}{q}U = A / q

m=k_{\text{эл}}qm = kэлq

W=k\frac{q_1q_2}{\varepsilon r}W = kq₁q₂ / (εr)

NOTATION

q: Electric charge is a quantity that determines the participation of a body in electrical interaction.
I: Current strength is the charge passing through the cross section of a conductor per unit time.
t: Time is a quantity characterizing the duration and sequence of events.
F: Force is a measure of the interaction of bodies that changes their movement or shape.
k: The Coulomb coefficient is the coefficient of electrical interaction of charges in a vacuum.
q_1: The first charge is the electric charge of the first body under consideration.
q_2: The second charge is the electric charge of the second body in question.
\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.
E: Electric field strength is the strength characteristic of the electric field.
\varphi: Potential is the energy characteristic of the electric field at a selected point.
U: Electric voltage is the work done by the electric field when transferring a unit charge.
A: Work is a measure of energy transferred when a force is applied.
m: Mass is a scalar physical quantity that is a measure of the inertia of a body.
k_{\text{эл}}: Electrochemical equivalent is the mass of a substance released by a unit charge.
W: Energy is a measure of a system's ability to do work.

THEORY

PRACTICE