Question

Define electric flux. Write its SI unit.

Answer 1

1) this clip is pictorical representation of. 2) this clip is an example of ELECTRIC FLUX

ELECTRIC FLUX

3)SI unit of ELECTRIC FLUX

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Electric Flux:

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

The vector associated with every area element of a closed surface is taken to be in the direction of the outward normal.

Area element vector ΔS = ΔSn̂, ΔS is magnitude of area element and n̂ is unit vectorin the direction of outward normal.

Electric flux, Δφ = EΔS = E ΔScosθ, θ is angle between E and ΔS.

Unit of electric flux is NC-1m2.

Total flux through a surface, φ ≈ Σ EΔS

Electric flux through an area is the product of magnitude of area and the component-of electric field vector normal to it.

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