Question

Conductivity k, is equal to ......
A. `(1)/(R)(l)/(A)`
B. `(G^(*))/(R)`
C. `Lambda_(m)`
D. `(l)/(A)`

Answer 1

As we know that, conductance is reciprocal of resistance an d conductivity is the conductance of `1cm^(3)` of substance Also, conductivity is reciprocal of resistivity.
`k=(1)/(rho)`
`R=rho(l)/(A)`
`rho=(R.A)/(l)rArrk=(1)/((R.A)/(l))`
`k=(1)/(R).(l)/(A)=(1)/(R)xx(G^(*))/(R)`
Hence, options (a) and (b) are the correct choices.