# What is meant by electric flux through a surface Class 12?

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Electric flux is the measure of flow of the electric field through a given area. Electric flux is proportional to the number of electric field lines going through a normally perpendicular surface. … The vector associated with every area element of a closed surface is taken to be in the direction of the outward normal.

## What is meant by electric flux through a surface?

Electric Flux through a surface is defined as the surface integral of the electric field lines passing normally through the surface. ϕ=∫E . dS. According to gauss’s law, total electric flux through a closed surface equals the net charge enclosed in the surface divided by the permittivitty.

## What is meant by electric flux and its SI unit?

Electric flux is defined as the measure of count of number of electric field lines crossing an area. Electric flux ϕ=EAcosθ SI unit of electric flux is Nm2/C.

## What is meant by electric flux and write its expression?

Electric flux is defined as the measure of count of number of electric field lines crossing an area. Electric flux ϕ=EAcosθ SI unit of electric flux is Nm2/C.

## What is equipotential surface Class 12?

Equipotential surface is a surface where all the points lying on the surface have the same electric potential. This means that a charge will have the same potential energy at every point on the equipotential surface.

## What is meant by flux in physics?

Flux is the presence of a force field in a specified physical medium, or the flow of energy through a surface. … Flux is depicted as “lines” in a plane that contains or intersects electric charge poles or magnetic poles.

## What do you mean by flux?

noun. a flowing or flow. the flowing in of the tide. continuous change, passage, or movement: His political views are in a state of flux. Physics.

## What is called electric flux?

In electromagnetism, electric flux is the measure of the electric field through a given surface, although an electric field in itself cannot flow. It is a way of describing the electric field strength at any distance from the charge causing the field.

## What is an equipotential surface Ncert?

An equipotential surface is one where the potential is same at every point on the surface. … Since r is constant, the equipotential surfaces are concentric spherical surfaces centered at the charge. Electric field lines are radial starting from or ending at the charge for positive and negative charges respectively.

## What is equipotential line and equipotential surface?

An equipotential line is a line along which the electric potential is constant. An equipotential surface is a three-dimensional version of equipotential lines. Equipotential lines are always perpendicular to electric field lines.

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## What is an equipotential surface give example?

a surface all of whose points have the same potential. For example, the surface of a conductor in electrostatics is an equipotential surface. In a force field the lines of force are normal, or perpendicular, to an equipotential surface.