According to quantum mech
According to quantum mechanics, high values for it are a result of the existence of forbidden bands, which cannot be occupied by electrons, between the conduction bands and valence bands. It is directly proportional with length but inversely proportional to cross-sectional area. This is analogous to the fact that it increases as devices are added in series and decreases as they are added in parallel. FTP, name this electric property that measures how much a material impedes the flow of electric current, equal to voltage over current according to Ohm's law.          |
According to quantum mechanics, high values for it are a result of the existence of forbidden bands, which cannot be occupied by electrons, between the conduction bands and valence bands.
{Resistance}