The graph has regions where the electric field is zero.
Using Gauss law:
E•A = Qenc/ε0
E = Qenc/ε0A. This expression implies that the electric field will be zero if the net charge enclosed is zero.
Besides, the electric field inside a conducting material is zero.
The sketch below represents a graph that shows the electric field strength (not the field lines) as a function of distance from the center for a pair of concentric uniformly charged spheres. Which of the following situations could the graph plausibly represent?
A. a solid nonconducting sphere, uniformly charged throughout its volume, inside of a positively charged conducting sphere
B. a positively charged nonconducting thin-walled spherical shell inside of a negatively charged conducting sphere
C. a positively charged conducting sphere within an uncharged conducting sphere
D. a positively charged conducting sphere within another positively charged conducting sphere
E. a positively charged nonconducting thin-walled spherical shell inside of another positively charged nonconducting thin-walled spherical shell
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