The product of resistivity and conductivity of conductor depends upon :

the cross-sectional area

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the temperature

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the length

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none of these

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Solution

The correct option is D none of these
As we know,
$R e s i s t i v i t y = \frac{1}{C o n d u c t i v i t y}$
$R e s i s t i v i t y \times C o n d u c t i v i t y = 1$
So, the product of resistivity and conductivity is unity for all conductors.
Hence, option D is correct.

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$\begin{matrix} (i) Electrical resistivity & (a) Potential difference is same (i i) Parallel combination & (b) Depends on length and cross sectional area (i i i) Resistance & (c) Produces constant EMF (i v) Battery & (d) Depends upon material \end{matrix}$

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The product of resistivity and conductivity of conductor depends upon :

The correct option is D none of theseAs we know,Resistivity=1ConductivityResistivity×Conductivity=1 So, the product of resistivity and conductivity is unity for all conductors.Hence, option D is correct.

The correct option is D none of these
As we know,
$R e s i s t i v i t y = \frac{1}{C o n d u c t i v i t y}$
$R e s i s t i v i t y \times C o n d u c t i v i t y = 1$
So, the product of resistivity and conductivity is unity for all conductors.
Hence, option D is correct.