The equation representing Kohlrausch law from the following is

(v⁺ are number of cations and v^- are number of anions )

Kohlrausch’s law states that the equivalent conductivity of an electrolyte at infinite dilution is equal to the sum of the conductances of the anions and cations.

${\mathrm{\lambda }}_{\mathrm{m}}^{\mathrm{o}}\mathrm{or} {\wedge }_{\mathrm{m}}^{\mathrm{o}}= {\mathrm{v}}^{+}. {\mathrm{\lambda }}_{+}^{\mathrm{o}} +{\mathrm{v}}^{-}.{\mathrm{\lambda }}_{-}^{\mathrm{o}}$