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Byju's Answer
Standard XII
Physics
Flux as the Flow
A charge 'q...
Question
A charge
′
q
′
is placed at the centre of a cube of side
l
. What is the electric flux passing through each face to the cube?
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Solution
Step 1: Applying Gauss Law for cube
Assuming the cube as gaussian surface, total flux passing through the cube of side
l
can be given as,
ϕ
=
q
ϵ
o
Step 2: Flux through each face of the cube
As the charge is placed symmetrically to each face of the cube, thus electric flux passing through each face is equal.
∴
Electric flux passing through each face,
ϕ
′
=
ϕ
6
=
q
6
ϵ
o
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