University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 31 - Alternating Current - Problems - Exercises - Page 1045: 31.17


50.0 volts.

Work Step by Step

Use the equation right before equation 31.20, which relates the rms voltages. $$V=\sqrt{V_R^2+(V_L-V_C)^2}$$ $$V=\sqrt{(30.0V)^2+(50.0V-90.0V)^2}$$ $$V=50 volts$$
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