Voltage | Physics | Khan Academy

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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[VinzentB]

THIS is what I was looking for several years, a simplistic explanation which makes voltage reachable.
Thank you for this!

[josephSky]

I am mathematician, and never understood what is voltage. People explained it to me, but i was not satisfied with the explanation, till i saw this video.thank u very much

[meflea]

No joke, I finally understand voltage... I wish this video existed before my a level exams.
Thank you very much for this lesson 🗿

[nawaztapali]

Wow! I mean it literally. I have never thought of electric potential in this way. Thanks for the video. I encourage you to make more such videos on basics concepts of physics.

[SurprisedBiscuits-enqc]

Thank you so much 🙏❤️
You the best physics teacher i ever see in my life 😍

[salysheeze]

Shout-out to the best electricity foundation explaining video ever

[DawitAlemayehu-sqhk]

this means if I hang on a wire without touching the ground, I don't get electrocuted. right?

[zanonoza]

Thank you for such a great explanation .

[thelegaleagle_vt]

Your videos make learning so enjoyable. Keep up the great work!

[lyricofphthia]

Does this mean that the electric potential values (joules per coulombs) are volts and voltage is the difference between the volts? Are volts and voltage different?

[priyank]

MAHESH SIR IS BACK IN KHAN ACADEMY!

(or did i just missed some of his vids?)