Question

An electric charge of 3X10⁸ C is placed at a point.
Find the electric flux through a closed sphere of
radius 10cm around the charge ?
What will be the flux, if the sphere is having a
radius of 20cm ?​

Answer 1

Answer:

Electric flux, ϕ=−1×10

3

Nm

2

/C

Radius of the Gaussian surface,

r=10.0cm

Electric flux coming out through a surface depends on the net charge enclosed inside a body. It does not depend on the size of the body. If the radius of the Gaussian surface is doubled, then the flux passing through the surface remains the same i.e., - 10

3

Nm

2

/C.

(b) q=ϵ

0

Φ=8.85×10

−12

×−1×10

3

C=−8.85nC