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A line charge of length 2 ' a ' is kept at the center of an edge BC of a cube ABCDEFGH having edge length ‘a’ as shown in the figure. If the density of line charge is λ C per unit length, then the total electric flux through all the faces of the cube will be ____. (Take, ∈ 0 as the free space permittivity)

1. 0 8 a ∈ λ
2. 0 16 a ∈ λ
3. 0 2 a ∈ λ
4. 0 4 a ∈ λ

Correct answer: 0 8 a ∈ λ

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