The same Gaussian surface is used to surround the two charged objects. The net number of field lines penetrating the surface is the same in both the cases, but the lines are oppositely directed What can you say about the net charge on the two objects ?

Predict and explain Gaussian surface A has twice the area of Gaussian surface B. Both surfaces enclose the same charge Q. Choose the best explanation from the following. (a) Gaussian surface B is closer to the charge, since it has the smaller area. It follows that it has the greater electric flux. (b) The two surfaces enclose the same charge and hence they have the same electric flux. (c ) Electric flux is proportional to the area Therefore , Gaussian surface A has the greater electric flux.

What do you mean by Gaussian surface ? What is the Gaussian surface for a line charge ? Apply Gauss theorem to find an expression for electric field near a line charge of linear charge density lamda

Predict and explain Gaussian surface A has twice the area of Gaussian surface B. Both surfaces enclose the same charge Q. Is the electric flux through surface A greater than, less than or the same as the electric flux through surface B ?

A point charge of 2.0 μC is at centre of cubical Gaussian surface 9.0 cm on edge. what is the net electric flux through the surface?