2. A -10 BC point charge is inside a cavity in a cond net charge of *10 nC. a. What is the total charge on the inside sur plain how you know. b. What is the total charge on the outside surface of the conductor? Explain how you know. c. Now suppose the charge inside the cavity was changed to a +10 nC charge and the conductor still has a net charge of +10 nC. What would be the total charges on the inside and outside surfaces? Explain how you know