The dimensional formula $[ML^0T^{-3}]$ is more closely associated with

The dimension of $R$ (Resistance) is:

Which physical quantity has the dimensions $M{L^2}{T^{-1}}$?

Out of the following pairs,which one does not have identical dimensions?

Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$.
Assertion $A$ : Product of Pressure $(P)$ and time $(t)$ has the same dimension as that of coefficient of viscosity.
Reason $R$ : Coefficient of viscosity $= \frac{\text{Force}}{\text{Area} \times \text{Velocity gradient}}$
Choose the correct answer from the options given below.

Of the following,the pair of physical quantities not having the same dimensional formula is