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If the electric field is uniform, the electric flux passing through a surface of vector area S is ΦE=E⋅S=EScosθ Φ E = E ⋅ S = ES cos where E is the magnitude of the electric field (having units of V/m), S is the area of the surface, and θ is the angle between the electric field lines and the normal ( perpendicular ) …

## What is electric flux give 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.

## How do you denote electric flux density?

This is the flux passing through per unit area at a distance r from the center of the charge. This is called electric flux density at the said point. We generally denote it with English letter D.

## What is electric flux Ncert?

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 orientation of area element decides the amount of electric flux. Thus, the area element is a vector.

## What is electric flux the Write It’s SI unit and derive it’s equation?

Electric flux through a surface in an electric field is defined as the total number of electric lines of force crossing the surface in a direction normal to the surface. Its SI unit is N m^{2} C^{−}^{1}.

## What is electric flux density class 12?

Electric flux density measures the strength of an electric field produced by a free electric charge, corresponding to the amount of electric lines of force moving through a given area. Electric flux density is the quantity of flux crossing through a defined area perpendicular to the flux’s direction.

## What is SI unit of electric flux density?

The SI unit of electric flux density is $dfrac{C}{{{m}^{2}}}$ it can also be written as $dfrac{N}{C}$ . So, the correct answer is “Option A”. Note: When the field lines are perpendicular to the surface of the body the electric flux density of the body is zero.

## Is the number of electric lines of flux passing through a unit area?

The number of electric lines of force passing through unit area is called electric flux. So option 1 is correct. The electric charge per unit area is called electric surface charge density of that surface.

## What is the symbol of flux?

SI radiometry units

Quantity | Unit | |
---|---|---|

Name | Symbol | Symbol |

Radiant flux | Φ_{e} |
W = J/s |

Spectral flux | Φ_{e}_{,}_{ν} |
W/Hz |

Φ_{e}_{,}_{λ} |
W/m |

## What is the electric flux due to electric field E 3 * 10 3?

electric flux will be zero.

electric field, E = 3 × 10³ i N/C through a square of side 10cm.

## What is the SI unit of electric flux and its dimensions?

Ans. Electrical flux has SI units of volt meters (V m), or, evenly, Newton meters squared per coulomb (N m^{2} C^{−}^{1}). Thus, the SI base units of electric flux are kg·m^{3}·s^{−}^{3}·A^{−}^{1}.

## What is meant by electric flux write the statement and mathematical form of Gauss’s theorem?

Gauss Law states that the total electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity. The electric flux in an area is defined as the electric field multiplied by the area of the surface projected in a plane and perpendicular to the field.