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The electric flux through a surface of area dA due to an electric field E is given by-

The electric flux through a surface of area dA due to an electric field E is given by- Correct Answer E.dA

The correct answer is option 1) i.e. E.dA

CONCEPT:

  • Electric flux: It is the number of electric field lines passing through a given surface area.

The electric flux associated with a surface kept in a uniform electric field is given by:

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ϕ = E.A = EAcosθ 

Where E is the uniform electric field, A is the area of the surface and θ is the angle between E and the area vector of A.

EXPLANATION:

Electric flux, ϕ = E.dA

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