Author: Khan Academy via YouTube
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The electric potential at a point represents the electric potential energy per unit charge that a particle would have at that location. The difference in electric potential between two points is called voltage. It’s measured in volts (V), equivalent to joules per coulomb (J/C). When comparing two points, the point with the higher electric potential is labelled positive (+), and the point with the lower electric potential is negative (-). If two points are at the same electric potential, the voltage between them is zero.

Sections:
00:00 – Intro
00:22 – Intuition for voltage using gravity
04:34 – Understanding voltage
07:43 – Positive and negative voltage
08:34 – Why should we care about voltage?
09:42 – Voltage is always between two points
10:18 – Why birds can stand on electric lines

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