Question

In an arrangement of two concentric conducting shells, with centre at origin and radii a and b
(a < b), charges Q1 and Q2, are given to inner and outer shell, then the potential V at a distance r from the
origin is (r <a)​

Answer 1

Given: Two concentric conducting shells.

To find: The potential V at a distance r from the  origin ?

Solution:

• Now we have given two concentric conducting shells.

• The centre is at origin.

• The radius of smallet shell is a and larger shell is b.

• Q1 is the charge on shell of radius a and Q2 is the charge on shell of radius b.

• r is the point located in the inner shell

• So the potential will be:

                  V(p) = k(Q1/a) + k(Q2/b)

                  V(p) = k(Q1/a + Q2/b)

Answer:

              So the potential is k(Q1/a + Q2/b).