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+[[Electric Force, Field, and Potential]]
+# Summary
+* Electric potential is energy per charge: $V=\Delta U_E/q$ (Volts)
+* Potential comes from multiple point charges added as scalars.
+* Potential can be positive or negative, reference set at infinity.
+* Electric field points towards decreasing potential. $|\vec E|=|\Delta V/\Delta r|$
+* Equipotent lines (isolines) are perpendicular to field vectors. No work is done moving charge along equipotent.
+* Conductors in electrical contact redistribute charge on the surface until it sits at the same potential.