Therefore, if a closed surface does not have any charges inside the enclosed volume, then the electric flux through the surface
is zero
.
What is the flux through a closed surface?
The net flux through a closed surface is
a quantitative measure of the net charge inside a closed surface
. 2. The net electric flux through any closed surface surrounding a net charge ‘q’ is independent of the shape of the surface.
What is the net flux through a closed surface if there are no charges inside of the surface?
If there is no net charge within a closed surface, every field line directed into the surface continues through the interior and is directed outward elsewhere on the surface. The negative flux just equals in magnitude the positive flux, so that the net, or total,
electric flux is zero
.
Why is the flux through a closed surface always zero?
The flux of a vector field through a closed surface is always zero
if there is no source or sink of the vector field in the volume enclosed by the surface
. The sources and sinks for the electric field are charges.
When electric flux through a closed surface is not zero?
Gauss’s law tells us that the electric flux through a closed surface is proportional to the net charge enclosed by the surface. Thus, the electric flux through the closed surface is
zero only when the net charge enclosed by the surface is zero
.
Is the magnetic flux through a closed surface always zero?
This means that the net magnetic flux through such a
closed surface is always zero
and therefore all the magnetic field lines going into the closed surface are exactly balanced by field lines coming out. This fact is useful for simplifying magnetic field problems.
What is the flux through the surface?
The electric flux through an area is defined as
the electric field multiplied by the area of the surface projected in a plane perpendicular to the field
. … It is an important tool since it permits the assessment of the amount of enclosed charge by mapping the field on a surface outside the charge distribution.
Which statement is correct the flux through a closed surface is always positive?
The flux through a closed surface is always positive The flux through a closed surface is always negative The sign of the flux through a closed surface depends on an arbitrary choice of sign for the surface vector.
How do you find flux on a surface?
Find the flux of the vector field <y,x,z> in the negative z direction through the part of the surface z=g(x,y)=16-x^2-y^2 that lies above the xy plane (see the figure below). Hence, the flux through the surface in the downward z direction is
-128*pi cubic units per unit time
.
What are the conditions if net electric flux through a surface is zero?
In a closed surface, if the net electric flux is zero, then
the net electric charge will be also zero
. Since electric flux is defined as the rate of flow of electric field in a closed area and if the electric flux is zero, the overall electric charge within the closed boundary will be also zero.
Is it possible to have flux associated with an imaginary closed surface to be zero even when electric field on the surface is non zero?
No. This statement comes from
Gauss’ law
which states that the total flux will be zero if there is zero charge within the surface. So, there could be electric fields.
Is it possible to have flux associated with an imaginary closed surface?
Yes, it is possible by
applying Gauss’s Law
.
What is the net magnetic flux through a closed surface?
The net magnetic flux through any closed surface is
zero
.
Does magnetic flux have a direction?
The general direction for the magnetic flux flow is
from the North ( N ) to the South ( S ) pole
. … However, magnetic flux does not actually flow from the north to the south pole or flow anywhere for that matter as magnetic flux is a static region around a magnet in which the magnetic force exists.
What does magnetic flux depend on?
Faraday’s law states that the EMF induced by a change in magnetic flux depends on
the change in flux Δ, time Δt, and number of turns of coils
.
What is the flux not depend on?
Gauss’s law of electricity, which is included within the fundamental laws of electromagnetism, states that the electric flux through a closed surface with electric charge inside, just depends on the net charge enclosed in the surface and does not depend
the shape or size of the surface
.
