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Question

Mathematically, electric flux can ϕ be represented as:
E= electric field
^n= surface normal vector
A= surface area

A
ϕ=E^nA
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B
ϕ=E.^nA
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C
ϕ=E.^nA
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D
ϕ=EnA
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Solution

The correct option is C ϕ=E.^nA
ϕ=E.A
Direction of area vector is taken along the normal to the surface.

Hence, ϕ=E.^nA where ^n is direction normal to surface.

Answer-(C)

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