Answer: The voltage across the terminals of an ac power
Chapter 31, Problem 31.3(choose chapter or problem)
The voltage across the terminals of an ac power supply varies with time according to Eq. (31.1). The voltage amplitude is V = 45.0 V. What are (a) the root-mean-square potential difference Vrms and (b) the average potential difference Vav between the two terminals of the power supply?
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