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The technical term is electron mobility (or in general, carrier mobility). See: ...sorry, you cannot view external links. To see them, please
REGISTER or LOGINThe conductivity=1/resistance is the product of carrier mobility and carrier concentration.In a transmission line or cable, the velocity of propagation of an electromagnetic wave is determined by the permeability and permittivity of the cable, which is affected by its geometry and it construction materials. The speed of light in a vacuum is determined by the permeability and permittivity of free space.However, when the size of the components is far less than the wavelength of operation, the behaviour of electrons and holes is of greater interest, and the drift velocity is a key parameter affecting the speed of components fabricated from that material.