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posledela
4 years ago
5

Compute the electrical conductivity of cylindrical silicon specimen 5.1 mm (0.2 in.) in diameter and 51 mm (2 in.) in length in

which a current of 0.1 A passes in an axial direction. A voltage of 12.5 V is measured across two probes that are separated by 38 mm (1.5 in.).
Chemistry
1 answer:
zhannawk [14.2K]4 years ago
3 0

Answer:

Therefore electric conductivity \sigma=1.46  (Ω-m)⁻¹

Explanation:

\sigma=\frac{1}{\rho} =\frac{Il}{VA}

Here σ= electrical conductivity

        I = current = 0.1 A

        l= length= 38 mm= 38×10⁻³ m

       v= voltage = 12.5 V

      A = area = \pi(\frac{d}{2} )^{2} = \pi (\frac{51\times 10^{-3}}{2} )^2 m²

\sigma=\frac{(0.1)\times 38\times 10^{-3}}{12.5\times \pi (\frac{51\times 10^{-3}}{2} )^2 }

  =1.46 (Ω-m)⁻¹

Therefore electric conductivity \sigma=1.46  (Ω-m)⁻¹

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