Point charge

Storyboard

A point charge is an idealized model in physics where a charge is concentrated at a single point with no dimensions. It generates an electric field that radiates uniformly outward, decreasing in strength with the square of the distance.

>Model

ID:(2074, 'ky')


Electric field of a point charge

Description

Since Gauss's law states that the total flow of electric field through a closed surface is proportional to the enclosed charge, using 11377:

equation=11377

can be applied to the case of a single surface Surface ($S$) corresponding to a sphere of radius Radius ($r$):

equation=4665

With this you finally obtain:

equation

ID:(11374, 'gm')


Point charge

Description

Calculations


First, select the equation:   to ,  then, select the variable:   to 

Symbol
Equation
Solved
Translated

Calculations

Symbol
Equation
Solved
Translated

 Variable   Given   Calculate   Target :   Equation   To be used



Variables

Symbol
Text
Variable
Value
Units
Calculate
MKS Value
MKS Units
$r$
r
Radius
m
$\epsilon$
epsilon
Dielectric constant
-
$Q$
Q
Charge
C
$E_p$
E_p
Electric field of a point charge
V/m
$\epsilon_0$
epsilon_0
Electric field constant
C^2/m^2N

ID:(2074, 0)


gphysics.net - Dr. Willy H. Gerber
Palos Verdes, Costa de Corral, Chile