Unit of self inductance is
$\frac{{Newton - second}}{{Coulomb \times Ampere}}$
$\frac{{Joule/Coulomb \times Second}}{{Ampere}}$
$\frac{{Volt \times metre}}{{Coulomb}}$
$\frac{{Newton \times metre}}{{Ampere}}$
Unit of Stefan's constant is
If the unit of length and force be increased four times, then the unit of energy is
Unit of moment of inertia in $MKS$ system
If $x = at + b{t^2}$, where $x$ is the distance travelled by the body in kilometres while $t$ is the time in seconds, then the units of $b$ are