Which of the following statements about gausss law are...

Which of the following statements about Gauss's law are correct? (There may be more than one correct choice.) A) If a Gaussian surface is completely inside an electrostatic conductor, the electric field must always be zero at all points on that surface. B) The electric flux passing through a Gaussian surface depends only on the amount of charge inside that surface, not on its size or shape. C) If there is no charge inside of a Gaussian surface, the electric field must be zero at points of that surface. D) Gauss's law is valid only for symmetric charge distributions, such as spheres and cylinders. E) Only charge enclosed within a Gaussian surface can produce an electric field at points on that surface.

Transcript

00:01 Hello, we are having a problem in which we are required to see which statements are correct and which statements are not correct.

00:09 So, pay attention to my words.

00:11 So, every word of mind will be very important for you to understand this concept and the solution will be a lot more easier for you.

00:21 So, first of all, we need to know about gorslo.

00:24 I have written a very simple definition of gorslo, which is obviously, you know, like obvious definition of a gos law so i have written that e a cost theta equals charge enclosed over a epsilon knot and this is my flux now a gaussian surface has an electric flux if it encloses some charge you know this right now if i say that electric flux is zero if no charge is enclosed you can see from this formula as well that electric flux will be zero if no charge is being enclosed.

01:01 Now, you also should know that electric fields inside conducting materials are zero, right? this is a very simple thing.

01:08 Now, first statement is correct because it says that electric field inside a conductor is zero and a gaussian surface inside a conductor has zero electric flux and no electric field at all points on the surface.

01:26 So, this is a very correct statement.

01:29 So, if i move towards second statement, then it is also correct.

01:33 How? let me just tell you.

01:35 So, what is my second statement? second statement says that electric flux passing through a gaussian surface depends only on the amount of charge inside that surface, not on its shape or size.

01:46 You know that gauze law states that flux equals charge enclosed over f -saren -not.

01:53 Now, electric flux depends on the charge enclosed and is, independent of the size and shape of the gaussian surface.

02:00 So this is a very correct statement.

02:02 You can refer to the simple definition.

02:05 So reason behind writing the simple definition for gauss law is that you need to understand very basic things of gauss law in order to solve this very problem.

02:15 Now let's move ahead.

02:17 Now if i talk about third statement, so you need to be very careful in this third statement...

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