This is a great question because this relationship isn't natural at all. If you have charges in a vacuum and apply a voltage, you won't get charges traveling with a constant velocity (i.e., a current), but the charges will get *accelerated*.
But things change once you have a mechanism to lose energy. Then, you have a competition between a force that accelerates the charges and the equivalent of a friction force that slows them down. In electrical systems, this friction is called resistance.
At sufficiently low speeds, you get a linear relationship between the velocity of the charges (again, this is the current) and the voltage you apply. This means that the linear relationship is not a universal law but merely arises when the conditions are right. There are important nonlinear electric devices like diodes or transistors where the linear relationship breaks down.
Hendrik Weimer
npub145…x3wns
2026-10-27 22:55:43 UTC
in reply to nevent1q…js4q
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npub1456mcswdpnzyayaqjv8h0kzcchtcrkjdhp9udcykyq9d5uuszk2svx3wnsSeen on
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2026-10-27 22:55:43 UTCEvent JSON
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