Calculate the electronic polarizability of A1. Given number of Air atoms at NTP=2.7×1025/m3 and dielectric constant of Ar=1.0024.

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written 3.9 years ago by

teamques10 ★ 69k

• modified 3.9 years ago

engineering physics

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written 3.9 years ago by

teamques10 ★ 69k

$\mathrm{a_e = \dfrac{\varepsilon_0(\varepsilon_r-1)}{N}}$

$\mathrm{=\dfrac{8.85 \times 10^{-12} \times (1.0024 -1)}{2.7 \times 10^{25}}}$

$\mathrm{= 7.866 \times 10^{-40} F m^2}$

Therefore, the electonic polarisability of air atom at NTP is equal to $\mathrm{7.866 \times 10^{-40} F m^2}$

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