In the following ‘I’ refers to current and other symbols have their usual meaning. Choose the option that corresponds to the dimensions of electrical conductivity :

Question

$\begin{array}{1 1}(1) ML^{−3} T^{−3} I^2 \\ (2) M^{−1} L^{3} T^{3} I \\ (3) M^{−1} L^{−3} T^{3} I^{2} \\ (4) M^{−1} L^{−3} T^{3} I \end{array} $