Question

a hollow spherical shell carries charge density in the region a<=r<=b.Find the electric field in three regions (i)r<a,(ii)a<r<b,(iii)r>b​

Answer 1

Answer:

i. 0 N/C ii.kq/r^2 N/C iii.0 N/C

Explanation:

When r<a, there is no charge density in the hollow sphere as r>=a(given). Therefore electric field is 0.

When r lies between a and b electric field acrs hue to the presence of the surface charge which can be calculated by the formula E= kq/r^2 where k=1/4 pi € and q=surface charge density.

When r>b, again there is no charge density in a similar way as in case of (i). thus E=0.