21 ms·

Circuits don't operate at speed of light, though. People like to say this over and over again, but electron mobility through a circuit is only around 2/3s the s

Circuits don't operate at speed of light, though. People like to say this over and over again, but electron mobility through a circuit is only around 2/3s the speed of light, IIRC. They may have very tiny mass, but they still have mass.

mycall 7y ago
It is the mass in the electrons that creates the heat.
jabl 7y ago
No, it's the electromagnetic field which propagates at around 2/3c in the conductor. The electron drift velocity is on the order of a fraction of a mm/s.