JEE MAIN - Physics (2012 - No. 16)
In a uniformly charged sphere of total charge $$Q$$ and radius $$R,$$ the electric field $$E$$ is plotted as function of distance from the center. The graph which would correspond to the above will be:
Giải thích
$${E_{in}} \propto r$$
$${E_{out}} \propto {1 \over {{r^2}}}$$
$${E_{out}} \propto {1 \over {{r^2}}}$$