A spherical metal conductor of radius starts electrically neutral
PHYSICS · Subjective · AP · Physics 2: Algebra-based · Electric Force Field and Potential · Electric Force Field and Potential
Problem
A spherical metal conductor of radius 4.0cm starts electrically neutral. A negatively charged rod is used in a charging sequence that includes grounding the sphere. During grounding, 3.0nC of charge leaves the sphere and flows to Earth. After the ground wire is removed and the rod is taken far away, calculate the sphere’s surface charge density σ in C/m2.