Answer:
1- True
2- False
3- False
4-False
Step-by-step explanation:
1) That's because the charge is uniformly distributed on the surface
2) Because of (1) the charge is not zero outside the surface
3) The charge is uniformly distributed on the volume only on insulating materials, that not apply to conductive materials.
4) That's not true unless the current is zero, the conductive material has resistance so the potential will vary along its body.