00:01
Hello, leonard.
00:01
Let's solve this problem.
00:03
A schematic diagram of this problem is there on the screen.
00:09
Sphere a and inside sphere b.
00:15
Okay, and radius of sphere a is ra and radius of sphere b is rb.
00:23
Isn't that a charge is at the center of the inner sphere.
00:30
So for instance, let's say the charge is q.
00:33
Okay and it is said that both sphere are the eq potential surface that is pretty understood because potential is a factor of distance and it is given by 1 by 4 pi epsilon 0 q by r so potential at a point varies with the distance okay for instance imagine that a charge a q is still so potential at a point b which is at a distance r is given by this.
01:09
If this point is here, then the only variable is here is r.
01:14
R is going to be a new r in that case.
01:18
Okay, say it is r1.
01:21
And if this point is here, then the new distance is going to be r2.
01:25
So the only difference here is the only variable which determine the potential is r.
01:31
For a particular charge queue...