# Chapter 31 - Alternating Current - Problems - Exercises - Page 1044: 31.3

a. 31.8 V. b. Zero.

#### Work Step by Step

a. $V_{rms}=\frac{V}{\sqrt2}=\frac{45.0V}{\sqrt2}=31.8V$. b. The voltage is sinusoidal, so the average is zero.

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