Question

A charge of +7 micro coulomb
is placed at the centre of two
concentric spheres with radius
2.0 cm and 4.0 cm respectively.
The ratio of the flux through
them will be----
O 1:4
O
1:2
1:1
O 1:16​

Answer 1

Answer:

1:1

Explanation:

Since flux through a Gaussian surface = $\\\tt \dfrac{q}{\epsilon_{0}}$

and as charge is same the flux will be same.

Answer 2

If the charge of +7 micro coulomb is placed at the centre of two concentric spheres with the radius 2.0cm and 4.0cm respectively, the ratio of the flux through them will be 1:1.

Hence, flux through a Gaussian surface = $\begin{lgathered}\\\sf \dfrac{q}{\epsilon_{0}}\end{lgathered}$ and as charge is same, the flux will also be the same!