The electric field is zero outside of a sphere because the electric field lines are radial, meaning they point directly away from the center of the sphere. As you move further away from the sphere, the field lines become more spread out, resulting in a weaker electric field until it eventually becomes zero.
The electric field outside of a sphere is caused by the charge distribution on the surface of the sphere. Due to the symmetry of the sphere, the electric field lines cancel each other out, resulting in a net electric field of zero.
No, there is still an electric field present outside of a sphere. However, the net electric field is zero due to the cancellation of the electric field lines from the charge distribution on the surface of the sphere.
As you move further away from the sphere, the electric field becomes weaker. This is because the electric field lines are spread out over a larger area, resulting in a lower concentration of electric field lines and a weaker electric field.
The electric field being zero outside of a sphere is significant because it allows for a stable and balanced electric field around the sphere. This is important in many applications, such as in electronic devices, where a stable and controlled electric field is necessary for proper functioning.