1. The problem statement, all variables and given/known data An isolated conducting spherical shell carries a negative charge. What will happen if a positively charged metal object is placed in contact with the shell interior? Discuss the three cases in which the positive charge is a) less than , b) equal to, and c) greater than the negative charge in magnitude 2. Relevant equations Important point: The net electric charge of a conductor resides entirely on its surface. 3. The attempt at a solution I want to know charged metal object is placed in contact with what does it mean? Does it mean charged metal object is placed inside the shell interior? Is it correct?