AP Physics C: E&M
10.1 Electrostatics with Conductors
A isolated metal box with sharp corners carries a net positive charge and reaches electrostatic equilibrium. A student maps the electric field vectors and lines of equal electric potential (equipotential lines) in the region surrounding the box. Which of the following correctly describes the direction of the electric field vectors relative to the equipotential lines at the surface, and the spacing of the equipotential lines near the sharp corners compared to the flat sides?
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