Answer :

The given equation is

[tex]V=\text{ZRS}[/tex]

Let's divide the equation by RS.

[tex]\begin{gathered} \frac{V}{RS}=\frac{\text{ZRS}}{RS} \\ Z=\frac{V}{RS} \end{gathered}[/tex]

Therefore, the answer is

[tex]Z=\frac{V}{RS}[/tex]