PHYSICAL QUANTITY

Electric field strength: formulas and units of measurement

Electric field strength: symbol E, unit V/m, N/Cl. Formulas and explanations for Electricity.

EE\frac{\text{В}}{\text{м}},\ \frac{\text{Н}}{\text{Кл}}volt per meter, newton per coulomb

KEY CONNECTIONS

Formulas

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

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

E=\frac{U}{d}E = U / d

E=\frac{\sigma}{2\varepsilon_0}E = σ / (2ε₀)

\sigma=\frac{q}{S}σ = q / S

NOTATION

E: Electric field strength is the strength characteristic of the electric field.
F: Force is a measure of the interaction of bodies that changes their movement or shape.
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.
d: Distance - the length of the space between selected points.
\sigma: Surface charge density is the charge per unit surface area.
\varepsilon_0: Electric constant is a coefficient characterizing the electric field in a vacuum.
S: Area is the size of a surface or cross section.

THEORY

PRACTICE