I like watching science videos on YouTube and I have a very basic understanding of electronics. But I never seem to get the “negative voltage” thing.
Why is it used and how does it differ from normal voltage.
In: 5
Electrons move one way down a wire, positive voltage. Flip the wires around so the electrons move the opposite direction down the wire, negative voltage.
Kinda like you can have *negative* potential energy when you compare your current position to a nearby 1000’ mountain top. Just flip the math around and the height becomes positive instead of negative. Potential energy = mass * acceleration of gravity * height. If you are on the mountain top, your height would be 1000’-0’ =1000’. But on the flat next to the mountain the height is 0’-1000’=-1000’ when comparing the two elevations.
This is analogous to the negative voltage you are describing.
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