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atyy
atyy is offline
#7
Dec22-11, 04:42 PM
Sci Advisor
P: 8,004
It's analogous to standard circuit theory.

http://hyperphysics.phy-astr.gsu.edu...ic/ohmmic.html
"Even the electron speeds are themselves small compared to the speed of transmission of an electrical signal down a wire, which is on the order of the speed of light, 300 million meters per second."