The capacitance per unit length and the characteristic impedance of a lossless transmission line are $\mathrm{C}$ and $\mathrm{Zo}$ respectively. The velocity of a travelling wave on the transmission line
- $Z_{0} C$
- $\frac{1}{\mathrm{Z}_{\mathrm{o}} \mathrm{C}}$
- $\frac{Z_{0}}{C}$
- $\frac{\mathrm{C}}{\mathrm{Z}_{0}}$