A solid sphere of radius R is made of a metallic conductor. A hollow spherical shell of the same radius R is made of the same conducting material. An excess charge Q is deposited on each.
1) Which object has the greatest surface charge density?
2) Briefly explain your answer to the previous question.
3) A solid sphere of radius R is made of a metallic conductor. Another solid sphere of radius R is made of an insulating material. An excess charge Q is deposited on each. Which object has the greatest surface charge density?
4) Explain your answer to the previous question.