In which of the following systems of unit, $Weber$ is the unit of magnetic flux
$CGS$
$MKS$
$SI$
None of these
Unit of energy is
$Erg - {m^{ - 1}}$ can be the unit of measure for
Which of the following is a unit that of force?
Express unified atomic mass $\rm {unit}$ in $\rm {kg}$.
The $S.I.$ unit of gravitational potential is