 is distributed in the volume, because shells are designed, this point is outside, smaller is bigger than that, right? So, potential will be bigger, smaller. In this case, some concept and that can be, that I have used this basic concept and concept and concept, okay? So, I give you a hint, okay? So, you can see how much is that. The thing is that, this entire charge is outside the point, point inside the sphere, inside the hollows, how much it will be, okay? So, basically, the shell will be equal to k charge on the shell, let's say dq is the charge divided by k, which is 1 by inside the volume charge distribution. You are finding product volume of this? Yeah. The distance you take, you want to be different, okay? I think similarly if we take, okay, now let's take up, let's take up questions, while taking slightly, you know, important question, which is played into q is very simple, very simple, very simple simple. It becomes very complicated because the value is made. Sigma is the charge or the charge distribution? Surface charge distribution, charge per unit area. Sir, what is the condition of the time energy distribution? Let's not discuss how this is all right, no? Minus the small h. Just such a way as you get the value of sigma, okay? Small, small parts. You see how simple it flows, you know, all the concepts are so well connected. And another thing which is very important is clarity in thoughts in physics at least, you know, because in physics if you start thinking randomly, there is no limit, you start thinking about black holes, there is no limit of which you can think nonsense, right? Except the fact that physics is very simple, it's super simple.