Which is not a unit of electric field
$N{C^{ - 1}}$
$V{m^{ - 1}}$
$J{C^{ - 1}}$
$J{C^{ - 1}}{m^{ - 1}}$
Number of base $SI$ units is
Newton-second is the unit of
The dimension of Planck constant equals to that of
Which of the following is not a unit of self-inductance
The unit of Stefan-Boltzmann s constant $(\sigma )$ is