Question
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 $$E\left( r \right)$$ produced by the shell in the range $$0 \leqslant r < \infty ,$$ where $$r$$ is the distance from the centre of the shell?
A.
B.
C.
D.
Answer :
Solution :
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 $$E = k\frac{Q}{{{r^2}}}.$$
These characteristics are represented by graph (A).
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 $$E = k\frac{Q}{{{r^2}}}.$$
These characteristics are represented by graph (A).
