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A 120 V AC supply has a peak voltage swinging to about:
A190 V
B210 V
C170 V
D140 V
Answer & Solution
Correct answer: C. 170 V
1. The rms value is smaller than the peak.
2. The sine wave rises above the quoted figure.
3. The peak is about 170 volts.
_Source: OpenStax College Physics 2e, Chapter 20, Electric Current, Resistance, and Ohm's Law._
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