NEET-XII-Physics
32: Electric Current in Conductors
- #3The product of resistivity and conductivity of a cylindrical conductor depends on
(a) temperature
(b) material
(c) area of cross section
(d) None of thesedigAnsr: dAns : (d) None of these
The relation between the resistivity ρ and conductivity σ of a material is given by
`` \rho =\frac{1}{\sigma }``
`` \Rightarrow \rho \times \sigma =1``
The product of conductivity and resistivity is unity. So, this product does not depend on any of the given quantities.
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