explain about electrical conductivity?

Question

details about it

Answer 1

Electric conductivity is the ability of a material that how much current flows in it on applying an electric field or potential. More the current more the conductivity. In an unbiased conductor( i.e. when no voltage is applied) conducting or free electrons are moving randomly with different velocities, the effect is that net velocity is 0. Now when a potential is applied, then electrons start experiencing force due to field given by
Field strength= Applied potential/ Length of the conductor

Due to this force electrons are drifted towards +ve terminal of potential source, now there ia a net velocity of all the electrons which is called Drift Velocity. Its order is about 10^6 for copper n varies for different materials. More the drift velocity, more the current and hence more the conductivity.
You should also know that phenomenons of normal conductivity n super conductivity are not the same. In super conductors its not the free electrons but electron pairs( Cooper Pairs) which are responsible for superconductivity. For more on conductivity and superconductivity, read any Solid State Physics book.

Answer 2

Electrical conductivity is the measure of a material's ability to accommodate the transport of an electric charge. Its SI derived unit is the siemens per metre, (A2s3m−3kg−1) (named after Werner von Siemens) or, more simply, Sm−1.
https://www.electrikals.com/