Question

write an expression for the flux delta flux of the electric field E through area element delta s​

Answer 1

ANSWER :-

Vectors are shown in the solution as bold.

Flux through area element Δs is given by

ΔΦ = E.Δs = EΔs Cos Θ

Where Θ is angle between E and.Δs.

Δs is perpendicularly outward to the surface hence Θ = 180 so

ΔΦ = E.Δs = - EΔs

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