The physical quanitity the dimensions ` [M^(-2)L^(-3)T^(0)A^(2)]` is

Options

A. resistance
B. resistivity
C. electrical conductivity
D. electronmotive force

Answer

C

Explanation

`R = (I)/(sigmaA) rArr sigma = (I)/(RA)`
from H `= t^(2)Rt`
we know ` R= (H)/(I^(2)t)`
` :. [a] = [(lI^(2)t)/(HA)]`
` = [[LA^(2)T)/(ML^(2)T^(2)L^(2)] ]`
` = [M^(-1)L^(-3)T^(3)A^(2)]`