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A conductivity cell has two electrodes $18 \mathrm{~mm}$ apart and having cross sectional area $2.0 \mathrm{~cm}^2$. What is value of cell constant?
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The correct answer is:
$0.9 \mathrm{~cm}^{-1}$
Cell constant $=\frac{\mathrm{L}}{\mathrm{A}}=\frac{1.8}{2}=0.9 \mathrm{~cm}^{-1}$
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