Question
Certain heavy industrial equipment uses AC power that has a peak voltage of 679 V. What is the rms voltage?
Question by OpenStax is licensed under CC BY 4.0
Final Answer

480 V480 \textrm{ V}

Solution video

OpenStax College Physics for AP® Courses, Chapter 20, Problem 73 (Problems & Exercises)

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Video Transcript
This is College Physics Answers with Shaun Dychko. RMS voltage is peak voltage divided by root two. So we have 679 volts divided by root two is 480 volts RMS.