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प्रश्न
The product of resistivity and conductivity of a cylindrical conductor depends on ____________ .
पर्याय
temperature
material
area of cross section
None of these
MCQ
रिकाम्या जागा भरा
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उत्तर
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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