If pressure $P$, velocity $V$ and time $T$ are taken as fundamental physical quantities, the dimensional formula of force is
$P{V^2}{T^2}$
${P^{ - 1}}{V^2}{T^{ - 2}}$
$PV{T^2}$
${P^{ - 1}}V{T^2}$
$A$ and $B$ possess unequal dimensional formula then following operation is not possible in any case:-
If electronic charge $e$, electron mass $m$, speed of light in vacuum $c$ and Planck 's constant $h$ are taken as fundamental quantities, the permeability of vacuum $\mu _0$ can be expressed in units of
If speed $V,$ area $A$ and force $F$ are chosen as fundamental units, then the dimension of Young's modulus will be :