Question

a charge 1mu coulomb is placed at the centre of a cube. calculate the electric flux passing through the entire cube​

Answer 1

Answer:

Correct option is

D

3ε

0

1

Net flux coming out from all sides of the cube is

ϕ=

ε

0

1

∑q=

ε

0

2

As the cube has six faces, so the flux through each face will be

ϕ

′

=

6

ϕ

=

6

ε

0

2

=

ε

0

2

×

6

1

=

3ε

0

1

.