a charge Q is placed in a cavity (radius a) in a plastic (dielectric medium) sph

ID: 2014617 • Letter: A

Question

a charge Q is placed in a cavity (radius a) in a plastic (dielectric medium) sphere of radius b. using the new Gauss' law find the following:

1. the electric displacement field D inside the cavity (r<a).

2. the electric displacement field D in the dielectric medium (a<r<b).

3. the electric displacement field D outside the sphere (r>b).

4. the electric field E inside the cavity (r<a)

5. the electric field E in the dielectric medium (a<r<b).

6. the electric field E outside the sphere (r>b).

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