An AC source has a peak voltage of 180 V. What is its rms voltage?

Step-by-step solution

1. Convert the peak voltage to rms by dividing by $\sqrt{2}$.
2. Use the relation $V_{rms}=\frac{V_m}{\sqrt{2}}$.
3. Substitute V_m=180\,V to get $V_{rms}=\frac{180}{\sqrt{2}}\approx 127$.3\,V.

Concept tested: RMS conversion

Published 12 September 2026 · Last updated 16 September 2026 · How this solution was prepared and checked