A uniform isotropic dielectric is shaped as a spherical layer with radii a and b Draw the approximate plots of the electric field strength E and the potential p vs the distance r from the centre of the layer if the dielectric has a certain positive extraneous charge distributed uniformly (a) Over the internal surface of the layer (b) Over the volume of the layer

Question: A uniform isotropic dielectric is shaped as a spherical layer with radii a and b. Draw the approximate plots of the electric field strength E

A uniform isotropic dielectric is shaped as a spherical layer with radii a and b.
Draw the approximate plots of the electric field strength E and the potential φp vs the distance r from the centre of the layer if the dielectric has a certain positive extraneous charge distributed uniformly:
(a) Over the internal surface of the layer;
(b) Over the volume of the layer.

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