{"knowledge_schema": {"broad_category": "Physics \u2192 Electrostatics \u2192 Electric Fields", "refinement": "This problem involves understanding the behavior of electric fields in the presence of conductors and cavities, particularly how charges influence the electric field outside a conductor.", "specific_scope": "The focus is on calculating the electric field at a point outside a spherical conductor with a cavity containing a charge, using principles of electrostatics and Gauss's law.", "goal": "Determine the electric field at a specified point outside the spherical conductor due to a charge placed inside the cavity."}, "summary": "In this problem, we analyze the electric field generated by a charge placed inside a cavity of an uncharged spherical conductor. According to electrostatic principles, the presence of the charge induces a surface charge on the conductor, but the electric field outside the conductor behaves as if all the charge were concentrated at the center. The goal is to find the electric field at a point outside the conductor, which is given by the formula E = 14 \u03c0\u03f5_oqL^2, indicating that the electric field depends on the charge and the distance from the center of the conductor."}