\(\frac{\mathrm{N}_s}{\mathrm{~N}_p}=\frac{\mathrm{V}_s}{\mathrm{~V}_p}=\frac{\mathrm{I}_p}{\mathrm{I}_s}\)
Here,
\(\mathrm{N}_p=500, \mathrm{~N}_s=2500, \mathrm{~V}_{\mathrm{p}}=120 \mathrm{~V}\).
Then,
\begin{aligned}
\frac{2500}{500} &=\frac{V_{\mathrm{c}}}{120} \\
V_{\mathrm{s}} &=\left(\frac{2500 \times 120}{500}\right) \mathrm{V} \\
&=600 \mathrm{~V}
\end{aligned}