Figure shows equi-potential surfaces for a two charges system. At which of the labeled points point will an electron have the highest potential energy?

Question

G1 Physics · Accepted Answer

Step 1: Write electrostatic energy U = Σ kqᵢqⱼ/rᵢⱼ, and use Wext = ΔU for a quasistatic rearrangement. For moving particles, conserve K + U. Step 2: Evaluate initial and final separations/potentials. Step 3: Solve the resulting energy equation for the requested distance, speed or work. Final: B: Point B.