JEE MAIN - Physics (2008 - No. 16)
A thin spherical shell of radius $$R$$ has charge $$Q$$ spread uniformly over its surface. Which of the following graphs most closely represents the electric field $$E(r)$$ produced by the shell in the range $$0 \le r < \infty ,$$ where $$r$$ is the distance from the center of the shell?
c
Explanation
The electric field inside a thin spherical shell of radius $$R$$ has charge $$Q$$ spread uniformly over its surface is zero.
Outside the shell the electric field is $$E = k{Q \over {{r^2}}}.$$ These characteristics are represented by graph $$(a)$$.
Outside the shell the electric field is $$E = k{Q \over {{r^2}}}.$$ These characteristics are represented by graph $$(a)$$.
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