A dielectric which completely fills the volume in between two spheres is placed between two spheres. The inner sphere of radius a, carries a charge Q, the outer one is earthed. The relative permitivity of the dielectric medium varies as , where r is the distance from the centres of the spheres and alpha is a constant, show the potential is given by:
Can someone give me a hint as to how I should approach this?
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- Thread Starter
- 10-11-2008 22:42
Last edited by div curl F = 0; 10-11-2008 at 23:10.
- 10-11-2008 23:02
- 11-11-2008 02:37
Find the D field, and thus the E field, and thus the potential.
- 11-11-2008 13:47
Have you got it?