A conductance cell when filled with $0.5\mathrm{MKCl}$ Solution (conductivity $=6.67\times {10}^{-3}{\mathrm{\Omega }}^{-1}{\mathrm{cm}}^{-}$) registers a resistance of $243\mathrm{\Omega }$ Its cell constant is

cell constant is $1.62{\mathrm{cm}}^{-1}$

$K_{\text{cell }}=\kappa R=\left(6.67\times {10}^{-3}{\mathrm{\Omega }}^{-1}{\mathrm{cm}}^{-1}\right)\left(243\mathrm{\Omega }\right)=1.62{\mathrm{cm}}^{-1}$.

The electrode for the cell constant, K, is made up of two square plates that are spaced apart by a centimetre.