I learned that the vector flux through any
closed surface is always 0
. So if you have a sphere(closed surface) and you put it in an uniform electric field, then the total flux is 0.
Is flux through a closed surface always 0?
Gauss’s law for magnetism, which is one of the four Maxwell’s equations, states that
the total magnetic flux through a closed surface is equal to zero
.
What is the flux through the entire closed surface?
The total of the electric flux out of a closed surface is
equal to the charge enclosed divided by the permittivity
. 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.
What will be flux of a box with no charge in it?
22.3, there is no net electric flux through the surface of the box, and no net charge is enclosed in the box. … This suggests that the net electric flux through the surface of the box
is directly proportional to the magnitude of the net charge enclosed by the box
.
Why is flux through a closed surface zero?
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.
Is it possible to have flux associated with an imaginary closed surface?
Yes, it is possible by
applying Gauss’s Law
.
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.
Does flux depend on area?
The numerical value of the electric flux depends on
the magnitudes of the electric field and the area
, as well as the relative orientation of the area with respect to the direction of the electric field. … , demonstrating that electric flux is a measure of the number of field lines crossing a surface.
What is called Gaussian surface?
A Gaussian surface (sometimes abbreviated as G.S.) is
a closed surface in three-dimensional space through which the flux of a vector field is calculated
; usually the gravitational field, the electric field, or magnetic field.
Which law is true for any closed surface no matter what its shape or size?
“
Gauss’s law in electrostatics
is true for any closed surface, no matter what its shape or size is”.
Can you have negative magnetic flux?
Yes, magnetic flux can be negative
. It just depends on where the field is going. Say there is a sheet and magnetic field is going through it from front to the back, we can call the flux there as positive and negative when it’s the other way round.
What will be the electric flux through a closed surface if its size is doubled?
The electric flux through a chlosed surface area S enclosing charge Q is phi. If the surface area is doubled, then the flux is. According to Gauss’ theorem, electric flux passing through closed surface is given by
q/eqsilon0
which is independent of surface area so, flux remaining same.
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.
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 to be zero even when the electric field on the surface is non zero if yes then give an example?
n u Is it possible to have flux associated with an imaginary closed surface to be zero even when electric field on this surface is non-zero. If yes, then give one example. Two large, thin metal
plates are parallel and close to each other
. The plates have surface charge densities .
What is Gauss law and what is a Gaussian surface?
According to Gauss’s law, the flux of the electric field through any closed surface, also called a Gaussian surface, is
equal to the net charge enclosed divided by the permittivity of free space
: This equation holds for charges of either sign, because we define the area vector of a closed surface to point outward.
