Correct Answer - Option 2 :
Polystyrene
Concept:
Resistance: The property of substance by which it opposes the flow of current through it, is known as the resistance.
Resistivity is numerically equal to the resistance of a substance having a unit area of cross-section and unit length.
Resistivity (ρ) is an inverse of conductivity (σ)
i.e., ρ = 1/σ
Whereas, conductivity is a unit used to describe conductance of electricity in any specific material and every material have specific resistivity/conductivity.
Material
|
Resistivity
|
Aluminium
|
2.65 × 10−8
|
Polystyrene
|
1016
|
Silicon
|
6.4 x 102
|
Carbon
|
1.68 × 10−8
|