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Electric Energy, 3rd Edition by Mohamed A. El-Sharkawi

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Appendix C: Key Parameters

Elementary charge constant (q) = 1.602 × 10−19 C

Boltzmann’s constant k = 1.380 × 10−23 J/K

One mole of a substance contains 6.002214 × 1023 entities (molecules, ions, electrons, or particles)

Avogadro number NA = 6.002214 × 1023/mol

Extraterrestrial solar power density = 1.353 kW/m2

Standard atmospheric pressure at sea level = 101,325 Pa or N/m2

Specific gas constant for air = 287 W-s/(kg K)

Air permittivity ɛo= 8.85 × 10−12 Farad/m

Table of Resistivity

Aluminum

4.0 × 10−8 Ω-m

Copper

1.673 × 10−8 Ω-m

Nickel

10−7 Ω-m

Steel

7.2 × 10−7 Ω-m

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