the conductivity of pure water in a conductivity cell with electrodes of cross-sectional area 4cm2 placed at a distance 2 cm apart in 8 x 10-7 S cm-1. calculate the resistanceof conductuvity cell ...........

The conductivity κ = 8 x 10-7 S cm-1
Area , A = 4 cm2
Length ,L = 2 cm

Formula for calculating resistance is:
R = ρ LA

ρ=1κ

So, R = Lκ.A

R = ‚Äč2 cm8 × 10-7 S cm-1 x 4 cm2

R = 6.25 x 105 ohm                (relation between S and ohm is S = ohm-1)


 

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