Calculation of the conductivity of a wire

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A nichrome wire is 1.0 𝑚 long and 1.0 𝑚𝑚^2 in cross-sectional area. It carries a current of 4.0 𝐴 when a potential difference of 2.0 𝑉 is applied between its ends. Calculate conductivity of the wire.
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if the voltage is 5v length is 1km radius 9mm and current 3a then what will the conductivity?

sohaghossain
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Pls solve this one 😧😧😧😧
a metal wire has diameter of 0.25mm and electrical resistivity of 0.8*10^-8 om metre .
What will be the length of this wire to make a resistance 5 om

momanddadaregod
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Bonjour,

Votre avis m'intéresse particulièrement.

Tout commence depuis la conductivité dans une résistance purement ohmique.


Meilleures Salutations.

Frpv