Electronics > Beginners
how exactly resistor works
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rfeecs:
I'm not sure it's helpful at this point, but here's another model for how a resistor works, the Drude model:
https://en.wikipedia.org/wiki/Drude_model


--- Quote ---The model, which is an application of kinetic theory, assumes that the microscopic behavior of electrons in a solid may be treated classically and looks much like a pinball machine, with a sea of constantly jittering electrons bouncing and re-bouncing off heavier, relatively immobile positive ions.
--- End quote ---
The electrons are accelerated by the electric field, but keep bumping into the fixed atoms in the material, so that limits their net velocity.  They transfer energy in the process, which warms up the material.

This is not 100% accurate, but basically works, especially with some adjustments.  Ohm's law falls right out of this model.
Brumby:
That's the same concept as my cricket ball and bat - except there are lots of balls and bats.
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