c
\(\left[\mu_{{}}\right]=1 \text { as } \mu_{{r}}=\frac{\mu}{\mu_{{m}}}\)

[power factor \((\cos \phi)]=1\)

\(\mu_T{0}=\frac{{B}_{0}}{{H}}\left(\right.\) unit \(\left.={NA}^{-2}\right)\) : Not dimensionless

\(\left[\mu_{0}\right]=\left[{MLT}^{-2} {A}^{-2}\right]\)

quality factor (Q) \(=\frac{\text { Energystored }}{\text { Energy dissipated per cycle }}\)

So \(Q\) is unitless \(\&\) dimensionless.