An AC voltage source produces a sinusoidal voltage with a peak value of $480\text{V}$. What is its rms value?

Step-by-step solution

1. Use the relation $V_{\text{rms}}=\frac{V_{\text{peak}}}{\sqrt{2}}$.
2. Compute $V_{\text{rms}}=\frac{480}{\sqrt{2}}\approx 339.4\text{V}$, rounded to $339\text{V}$.

Concept tested: Conversion peak to rms voltage

Published 4 October 2026 · How this solution was prepared and checked