Consider a sphere filled with uniform charge density rhoâ‚€ except for an internal spherical bubble which is empty. Let A be the vector from the center of the sphere to the center of the bubble. What can be said about the electric field inside the bubble?
a) The electric field is zero everywhere inside the bubble.
b) The electric field is non-zero only at the center of the bubble.
c) The electric field is non-zero everywhere inside the bubble.
d) The electric field is directed radially outward from the center of the bubble.