1. Object High Low super conductivity.
Electric conductivity is very high.
Insulator : Teflon
Electric conductivity is very low.
Uses: maglev levitation train
Uses : Teflon tape
2016 ppt by ⓒ 유비

2. What is electric conductivity?
Definition: measure a material’s ability to conduct an electric current.
Representative symbol:σ
2. Unit
SI Unit : S/m , CGSE Unit : (s−1)
3. Classification
Super conductor
conductor
Semi-conductor
Insulator
• Commonly metal’s electrical conductivity increase in low temperature.
2016 ppt by ⓒ 유비

3. Electric conductivity comparison
Super conductor
High E.C
Conductor
(C(Graphene),Silver, Copper)
Semi –conductor( Si)
Insulator
(Rubber, PET, Teflon)
Low E.C
2016 ppt by ⓒ 유비