Why the flux due to outside charge is zero?

The no of electric field lines from a charge placed outside the closed surface penetrate the surface on one side of the surface and leave out it on its other side. That is coming and outgoing electric flux is the same. Therefore no net flux comes to or outgoes from the surface and it is zero.

What happens when a charge is outside the Gaussian surface?

Gauss’ law does consider charge both inside and outside of the Gaussian surface. It is just that the field lines from charges outside of the Gaussian surface cancel to zero because those field lines both enter and exit the surface. This produces equal flux, but with opposite sign.

Why the electric flux on the plane caps on the Gaussian surface is become zero?

If a closed surface has no net charge enclosed by it, then the net flux through it will be zero.

For which surface electric flux will be zero?

The vector flux will be zero if the boundary and the surface are parallel. The electric filed is a special type of a vector which has a non-zero divergence if there is some non-zero charge. The electric flux will be zero only if there is no charge enclosing that surface.

Does zero flux mean electric field?

when electric field is zero, flux is zero.

Does electric flux depend on shape of Gaussian surface?

As per the Guess theorem in electrostatics, electric flux does not depend on the shape or size of the surface. The electric flux depends only on the charge enclosed by the surface.

What is the electric flux through the 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.

What does Gaussian surface depend?

net charge enclosed and permittivity of the medium. net charge enclosed, permittivity of the medium and the size of the Gaussian surface.

Does zero flux through a closed surface result to zero field on the surface?

The net electric flux is zero through any closed surface surrounding a zero net charge.

Is the electric field zero if flux is zero?

What does it mean for flux to be 0?

Electric flux is proportional to the number of electric field lines going through a normally perpendicular surface. so if the electric field is parallel to the surface that means that no electric field is passing normally to the surface and hence the flux is zero.

Why does a Gaussian surface have a non-zero flux?

It is just that the field lines from charges outside of the Gaussian surface cancel to zero because those field lines both enter and exit the surface. This produces equal flux, but with opposite sign. Thus, only charge from inside the surface can produce a non-zero flux.

Does the net flux depend on the charge outside the surface?

So although the 2q charge outside the surface do contribute to the flux crossing the surface, the net flux, according to his law, is irrespective of it. So what ever charge you put outside, the net flux will be determined by only those surrounded by the surface.

Does Gauss’ law consider charge inside and outside the Gaussian surface?

Gauss’ law does consider charge both inside and outside of the Gaussian surface. It is just that the field lines from charges outside of the Gaussian surface cancel to zero because those field lines both enter and exit the surface.

How many times does the flux cross the surface?

There is a more intuitive view. Each field line of the flux created by an internal charge crosses the surface only once. However, any external charge’s line will either not pass over the surface or cross it twice. If the line doesn’t meet the surface, iit doesn’t contribute.